Help with a red warning "Resolve of invalid GC handle" (UNRESOLVED)

Hi, I recently did 2 new things and started getting an error that I have no idea how to get rid of? Maybe it is not even connected to these but:

I updated to Unity 2020.3.39 and tried out the built in screenshot capture with the code below (I got rid of this script and the error is still there):

#if UNITY_EDITOR
using UnityEditor;
using UnityEngine;
public class ScreenshotGrabber
{
    [MenuItem("Screenshot/Grab")]
    public static void Grab()
    {
        ScreenCapture.CaptureScreenshot("Screenshot.png", 1);
    }
}
#endif

and now the error warning stacktrace:

Resolve of invalid GC handle. The handle is from a previous domain. The resolve operation is skipped.
0x00007ff69e98b90c (Unity) StackWalker::GetCurrentCallstack
0x00007ff69e992f09 (Unity) StackWalker::ShowCallstack
0x00007ff69f72a09c (Unity) GetStacktrace
0x00007ff6a019aef7 (Unity) DebugStringToFile
0x00007ff6a019ac12 (Unity) AssertImplementation
0x00007ff69decb436 (Unity) IMGUI::smile:oWindow
0x00007ff69e08f170 (Unity) GUI_CUSTOM_Internal_DoWindow_Injected
0x00000247f8917ea3 (Mono JIT Code) (wrapper managed-to-native) UnityEngine.GUI:Internal_DoWindow_Injected (int,int,UnityEngine.Rect&,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,object,bool,UnityEngine.Rect&)
0x00000247f8917d7b (Mono JIT Code) UnityEngine.GUI:Internal_DoWindow (int,int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,object,bool)
0x00000247f8917cab (Mono JIT Code) UnityEngine.GUI:smile:oWindow (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,UnityEngine.GUISkin,bool)
0x00000247f8917bdb (Mono JIT Code) UnityEngine.GUI:Window (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle)
0x00000247f89179eb (Mono JIT Code) UnityEngine.GUILayout:smile:oWindow (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,UnityEngine.GUILayoutOption[ ])
0x00000247f8917813 (Mono JIT Code) UnityEngine.GUILayout:Window (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,string,UnityEngine.GUIStyle,UnityEngine.GUILayoutOption[ ])
0x00000247f89176f3 (Mono JIT Code) UnityEditor.SceneViewOverlay:End ()
0x00000247f88be54b (Mono JIT Code) UnityEditor.SceneView:OnGUI ()
0x00000247f5c970d3 (Mono JIT Code) UnityEditor.HostView:InvokeOnGUI (UnityEngine.Rect,UnityEngine.Rect)
0x00000247f5c96e83 (Mono JIT Code) UnityEditor.DockArea:smile:rawView (UnityEngine.Rect,UnityEngine.Rect)
0x00000247f5c8ba83 (Mono JIT Code) UnityEditor.DockArea:OldOnGUI ()
0x00000247f5c71fc0 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:smile:oOnGUI (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,bool,UnityEngine.Rect,System.Action,bool)
0x00000247f5c71153 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,System.Action,bool)
0x00000247f886e5b3 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:smile:oIMGUIRepaint ()
0x00000247f886badb (Mono JIT Code) UnityEngine.UIElements.UIR.RenderChainCommand:ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams,single,System.Exception&)
0x00000247f8869fcb (Mono JIT Code) UnityEngine.UIElements.UIR.UIRenderDevice:EvaluateChain (UnityEngine.UIElements.UIR.RenderChainCommand,UnityEngine.Material,UnityEngine.Material,UnityEngine.Texture,UnityEngine.Texture,UnityEngine.Texture,single,Unity.Collections.NativeSlice1<UnityEngine.UIElements.UIR.Transform3x4>,Unity.Collections.NativeSlice1<UnityEngine.Vector4>,UnityEngine.MaterialPropertyBlock,bool,System.Exception&)
0x00000247f88656e3 (Mono JIT Code) UnityEngine.UIElements.UIR.RenderChain:Render ()
0x00000247f8851d43 (Mono JIT Code) UnityEngine.UIElements.UIRRepaintUpdater:Update ()
0x00000247f5c523ae (Mono JIT Code) UnityEngine.UIElements.VisualTreeUpdater:UpdateVisualTreePhase (UnityEngine.UIElements.VisualTreeUpdatePhase)
0x00000247f885150b (Mono JIT Code) UnityEngine.UIElements.Panel:UpdateForRepaint ()
0x00000247f8851173 (Mono JIT Code) UnityEngine.UIElements.Panel:Repaint (UnityEngine.Event)
0x00000247f5c51c77 (Mono JIT Code) UnityEngine.UIElements.UIElementsUtility:smile:oDispatch (UnityEngine.UIElements.BaseVisualElementPanel)
0x00000247f5c519cb (Mono JIT Code) UnityEngine.UIElements.UIElementsUtility:UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (int,intptr,bool&)
0x00000247f5c517cf (Mono JIT Code) UnityEngine.UIElements.UIEventRegistration:ProcessEvent (int,intptr)
0x00000247f5c5170b (Mono JIT Code) UnityEngine.UIElements.UIEventRegistration/<>c:<.cctor>b__1_2 (int,intptr)
0x00000247f5c5156d (Mono JIT Code) UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)
0x00000247f5c5161e (Mono JIT Code) (wrapper runtime-invoke) :runtime_invoke_void_int_intptr_intptr& (object,intptr,intptr,intptr)
0x00007ffa952800e0 (mono-2.0-bdwgc) [mini-runtime.c:2849] mono_jit_runtime_invoke
0x00007ffa95202ac2 (mono-2.0-bdwgc) [object.c:2921] do_runtime_invoke
0x00007ffa9520bb1f (mono-2.0-bdwgc) [object.c:2968] mono_runtime_invoke
0x00007ff69e8cfed4 (Unity) scripting_method_invoke
0x00007ff69e8cafd1 (Unity) ScriptingInvocation::Invoke
0x00007ff69e8c4d95 (Unity) ScriptingInvocation::Invoke
0x00007ff69db7b7fa (Unity) Scripting::UnityEngine::GUIUtilityProxy::ProcessEvent
0x00007ff69f1f27b8 (Unity) GUIView::ProcessRetainedMode
0x00007ff69f761652 (Unity) GUIView::OnInputEvent
0x00007ff69f1f26a8 (Unity) GUIView::ProcessInputEvent
0x00007ff69f75a7d2 (Unity) GUIView::smile:oPaint
0x00007ff69f76438d (Unity) GUIView::RepaintAll
0x00007ff69f2bfa97 (Unity) PlayerLoopController::UpdateScene
0x00007ff69f2aa4e2 (Unity) PlayerLoopController::EnterPlayMode
0x00007ff69f2baef0 (Unity) PlayerLoopController::SetIsPlaying
0x00007ff69f2bcf69 (Unity) Application::TickTimer
0x00007ff69f730551 (Unity) MainMessageLoop
0x00007ff69f7346f1 (Unity) WinMain
0x00007ff6a0df2aae (Unity) __scrt_common_main_seh
0x00007ffaeb547034 (KERNEL32) BaseThreadInitThunk
0x00007ffaed4c26a1 (ntdll) RtlUserThreadStart

Found a submit on issue tracker, that after upgrading to 2020.3.39 this same warning started showing

Again this error but was not using Screenshot functionality, just editing prefabs…
(Still on 2020.3.39)
Stack trace:

Resolve of invalid GC handle. The handle is from a previous domain. The resolve operation is skipped.
0x00007ff743f3b90c (Unity) StackWalker::GetCurrentCallstack
0x00007ff743f42f09 (Unity) StackWalker::ShowCallstack
0x00007ff744cda09c (Unity) GetStacktrace
0x00007ff74574aef7 (Unity) DebugStringToFile
0x00007ff74574ac12 (Unity) AssertImplementation
0x00007ff74347b436 (Unity) IMGUI::smile:oWindow
0x00007ff74363f170 (Unity) GUI_CUSTOM_Internal_DoWindow_Injected
0x000001df8281f313 (Mono JIT Code) (wrapper managed-to-native) UnityEngine.GUI:Internal_DoWindow_Injected (int,int,UnityEngine.Rect&,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,object,bool,UnityEngine.Rect&)
0x000001df8281f1eb (Mono JIT Code) UnityEngine.GUI:Internal_DoWindow (int,int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,object,bool)
0x000001df8281f11b (Mono JIT Code) UnityEngine.GUI:smile:oWindow (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,UnityEngine.GUISkin,bool)
0x000001df8281f04b (Mono JIT Code) UnityEngine.GUI:Window (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle)
0x000001df8281ee5b (Mono JIT Code) UnityEngine.GUILayout:smile:oWindow (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,UnityEngine.GUILayoutOption[ ])
0x000001df8281ec83 (Mono JIT Code) UnityEngine.GUILayout:Window (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,string,UnityEngine.GUIStyle,UnityEngine.GUILayoutOption[ ])
0x000001df8281eb63 (Mono JIT Code) UnityEditor.SceneViewOverlay:End ()
0x000001df827e1e5b (Mono JIT Code) UnityEditor.SceneView:OnGUI ()
0x000001df817dded3 (Mono JIT Code) UnityEditor.HostView:InvokeOnGUI (UnityEngine.Rect,UnityEngine.Rect)
0x000001df817ddc83 (Mono JIT Code) UnityEditor.DockArea:smile:rawView (UnityEngine.Rect,UnityEngine.Rect)
0x000001df817d34c3 (Mono JIT Code) UnityEditor.DockArea:OldOnGUI ()
0x000001df81790870 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:smile:oOnGUI (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,bool,UnityEngine.Rect,System.Action,bool)
0x000001e05b14df43 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,System.Action,bool)
0x000001e05b14c7d3 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:smile:oIMGUIRepaint ()
0x000001e05b14978b (Mono JIT Code) UnityEngine.UIElements.UIR.RenderChainCommand:ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams,single,System.Exception&)
0x000001e05b1479ab (Mono JIT Code) UnityEngine.UIElements.UIR.UIRenderDevice:EvaluateChain (UnityEngine.UIElements.UIR.RenderChainCommand,UnityEngine.Material,UnityEngine.Material,UnityEngine.Texture,UnityEngine.Texture,UnityEngine.Texture,single,Unity.Collections.NativeSlice1<UnityEngine.UIElements.UIR.Transform3x4>,Unity.Collections.NativeSlice1<UnityEngine.Vector4>,UnityEngine.MaterialPropertyBlock,bool,System.Exception&)
0x000001e05b142b43 (Mono JIT Code) UnityEngine.UIElements.UIR.RenderChain:Render ()
0x000001e05b12de43 (Mono JIT Code) UnityEngine.UIElements.UIRRepaintUpdater:Update ()
0x000001df81711d0e (Mono JIT Code) UnityEngine.UIElements.VisualTreeUpdater:UpdateVisualTreePhase (UnityEngine.UIElements.VisualTreeUpdatePhase)
0x000001e05b11074b (Mono JIT Code) UnityEngine.UIElements.Panel:UpdateForRepaint ()
0x000001e05b110223 (Mono JIT Code) UnityEngine.UIElements.Panel:Repaint (UnityEngine.Event)
0x000001e05b10f777 (Mono JIT Code) UnityEngine.UIElements.UIElementsUtility:smile:oDispatch (UnityEngine.UIElements.BaseVisualElementPanel)
0x000001e05b10f48b (Mono JIT Code) UnityEngine.UIElements.UIElementsUtility:UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (int,intptr,bool&)
0x000001e05b10f2af (Mono JIT Code) UnityEngine.UIElements.UIEventRegistration:processEvent (int,intptr)
0x000001e05b10f1cb (Mono JIT Code) UnityEngine.UIElements.UIEventRegistration/<>c:<.cctor>b__1_2 (int,intptr)
0x000001e05b10f02d (Mono JIT Code) UnityEngine.GUIUtility:processEvent (int,intptr,bool&)
0x000001e05b10f0de (Mono JIT Code) (wrapper runtime-invoke) :runtime_invoke_void_int_intptr_intptr& (object,intptr,intptr,intptr)
0x00007ff9abec00e0 (mono-2.0-bdwgc) [mini-runtime.c:2849] mono_jit_runtime_invoke
0x00007ff9abe42ac2 (mono-2.0-bdwgc) [object.c:2921] do_runtime_invoke
0x00007ff9abe4bb1f (mono-2.0-bdwgc) [object.c:2968] mono_runtime_invoke
0x00007ff743e7fed4 (Unity) scripting_method_invoke
0x00007ff743e7afd1 (Unity) ScriptingInvocation::Invoke
0x00007ff743e74d95 (Unity) ScriptingInvocation::Invoke
0x00007ff74312b7fa (Unity) Scripting::UnityEngine::GUIUtilityProxy::processEvent
0x00007ff7447a27b8 (Unity) GUIView::processRetainedMode
0x00007ff744d11652 (Unity) GUIView::OnInputEvent
0x00007ff7447a26a8 (Unity) GUIView::processInputEvent
0x00007ff744d0a7d2 (Unity) GUIView::smile:oPaint
0x00007ff744d1438d (Unity) GUIView::RepaintAll
0x00007ff74486fa97 (Unity) PlayerLoopController::UpdateScene
0x00007ff74486dac9 (Unity) Application::TickTimer
0x00007ff744ce0551 (Unity) MainMessageLoop
0x00007ff744ce46f1 (Unity) WinMain
0x00007ff7463a2aae (Unity) __scrt_common_main_seh
0x00007ff9efb57034 (KERNEL32) BaseThreadInitThunk
0x00007ff9f06026a1 (ntdll) RtlUserThreadStart

Still this error on Unity 2020.3.40

Resolve of invalid GC handle. The handle is from a previous domain. The resolve operation is skipped.
0x00007ff753fdc4cc (Unity) StackWalker::GetCurrentCallstack
0x00007ff753fe3ac9 (Unity) StackWalker::ShowCallstack
0x00007ff754d7ad5c (Unity) GetStacktrace
0x00007ff7557eb677 (Unity) DebugStringToFile
0x00007ff7557eb392 (Unity) AssertImplementation
0x00007ff75351b436 (Unity) IMGUI::smile:oWindow
0x00007ff7536df370 (Unity) GUI_CUSTOM_Internal_DoWindow_Injected
0x0000018e029c6d93 (Mono JIT Code) (wrapper managed-to-native) UnityEngine.GUI:Internal_DoWindow_Injected (int,int,UnityEngine.Rect&,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,object,bool,UnityEngine.Rect&)
0x0000018e029c6c6b (Mono JIT Code) UnityEngine.GUI:Internal_DoWindow (int,int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,object,bool)
0x0000018e029c6b9b (Mono JIT Code) UnityEngine.GUI:smile:oWindow (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,UnityEngine.GUISkin,bool)
0x0000018e029c6acb (Mono JIT Code) UnityEngine.GUI:Window (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle)
0x0000018e029c68db (Mono JIT Code) UnityEngine.GUILayout:smile:oWindow (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,UnityEngine.GUIContent,UnityEngine.GUIStyle,UnityEngine.GUILayoutOption[ ])
0x0000018e029c6703 (Mono JIT Code) UnityEngine.GUILayout:Window (int,UnityEngine.Rect,UnityEngine.GUI/WindowFunction,string,UnityEngine.GUIStyle,UnityEngine.GUILayoutOption[ ])
0x0000018e029c65e3 (Mono JIT Code) UnityEditor.SceneViewOverlay:End ()
0x0000018e0296d4fb (Mono JIT Code) UnityEditor.SceneView:OnGUI ()
0x0000018e0165c403 (Mono JIT Code) UnityEditor.HostView:InvokeOnGUI (UnityEngine.Rect,UnityEngine.Rect)
0x0000018e0165c1b3 (Mono JIT Code) UnityEditor.DockArea:smile:rawView (UnityEngine.Rect,UnityEngine.Rect)
0x0000018e01650bf3 (Mono JIT Code) UnityEditor.DockArea:OldOnGUI ()
0x0000018e01636860 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:smile:oOnGUI (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,bool,UnityEngine.Rect,System.Action,bool)
0x0000018e016359f3 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,System.Action,bool)
0x0000018e0290d4e3 (Mono JIT Code) UnityEngine.UIElements.IMGUIContainer:smile:oIMGUIRepaint ()
0x0000018e0290aa0b (Mono JIT Code) UnityEngine.UIElements.UIR.RenderChainCommand:ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams,single,System.Exception&)
0x0000018e02908efb (Mono JIT Code) UnityEngine.UIElements.UIR.UIRenderDevice:EvaluateChain (UnityEngine.UIElements.UIR.RenderChainCommand,UnityEngine.Material,UnityEngine.Material,UnityEngine.Texture,UnityEngine.Texture,UnityEngine.Texture,single,Unity.Collections.NativeSlice1<UnityEngine.UIElements.UIR.Transform3x4>,Unity.Collections.NativeSlice1<UnityEngine.Vector4>,UnityEngine.MaterialPropertyBlock,bool,System.Exception&)
0x0000018e02904613 (Mono JIT Code) UnityEngine.UIElements.UIR.RenderChain:Render ()
0x0000018e027707e3 (Mono JIT Code) UnityEngine.UIElements.UIRRepaintUpdater:Update ()
0x0000018e01616c5e (Mono JIT Code) UnityEngine.UIElements.VisualTreeUpdater:UpdateVisualTreePhase (UnityEngine.UIElements.VisualTreeUpdatePhase)
0x0000018e0274ffdb (Mono JIT Code) UnityEngine.UIElements.Panel:UpdateForRepaint ()
0x0000018e0275fe83 (Mono JIT Code) UnityEngine.UIElements.Panel:Repaint (UnityEngine.Event)
0x0000018e01616527 (Mono JIT Code) UnityEngine.UIElements.UIElementsUtility:smile:oDispatch (UnityEngine.UIElements.BaseVisualElementPanel)
0x0000018e0161627b (Mono JIT Code) UnityEngine.UIElements.UIElementsUtility:UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (int,intptr,bool&)
0x0000018e0161607f (Mono JIT Code) UnityEngine.UIElements.UIEventRegistration:ProcessEvent (int,intptr)
0x0000018e01615fbb (Mono JIT Code) UnityEngine.UIElements.UIEventRegistration/<>c:<.cctor>b__1_2 (int,intptr)
0x0000018e01615e1d (Mono JIT Code) UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)
0x0000018e01615ece (Mono JIT Code) (wrapper runtime-invoke) :runtime_invoke_void_int_intptr_intptr& (object,intptr,intptr,intptr)
0x00007ffd95d100e0 (mono-2.0-bdwgc) [mini-runtime.c:2849] mono_jit_runtime_invoke
0x00007ffd95c92ac2 (mono-2.0-bdwgc) [object.c:2921] do_runtime_invoke
0x00007ffd95c9bb1f (mono-2.0-bdwgc) [object.c:2968] mono_runtime_invoke
0x00007ff753f20754 (Unity) scripting_method_invoke
0x00007ff753f1b851 (Unity) ScriptingInvocation::Invoke
0x00007ff753f15615 (Unity) ScriptingInvocation::Invoke
0x00007ff7531cb7fa (Unity) Scripting::UnityEngine::GUIUtilityProxy::ProcessEvent
0x00007ff754843378 (Unity) GUIView::ProcessRetainedMode
0x00007ff754db2312 (Unity) GUIView::OnInputEvent
0x00007ff754843268 (Unity) GUIView::ProcessInputEvent
0x00007ff754dab492 (Unity) GUIView::smile:oPaint
0x00007ff754db504d (Unity) GUIView::RepaintAll
0x00007ff754910657 (Unity) PlayerLoopController::UpdateScene
0x00007ff7548fb0a2 (Unity) PlayerLoopController::EnterPlayMode
0x00007ff75490bab0 (Unity) PlayerLoopController::SetIsPlaying
0x00007ff75490e8f7 (Unity) Application::TickTimer
0x00007ff754d81211 (Unity) MainMessageLoop
0x00007ff754d853b1 (Unity) WinMain
0x00007ff75645326e (Unity) __scrt_common_main_seh
0x00007ffdee597034 (KERNEL32) BaseThreadInitThunk
0x00007ffdef9026a1 (ntdll) RtlUserThreadStart