Custom editor window (using ui elements), package manager and ui elements debugger blank

Unity Engine
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1

Hi everyone,

I have an issue where several windows of Unity are blank. Only the window/tab title will be visible. The rest of the page is empty.

I first discovered the issue when I opened an existing custom window and saw that it was blank where previously it was working fine. The change is that I got a new laptop. Looking into the issue I noticed I could make elements appear using EditorGUILayout inside OnGUI, but not when I added elements to the root to create a UI that way. The elements would not show up at all.

Later I also discovered that some existing Unity windows show the same symptoms, like the Package Manager and the UI Elements Debugger. They are completely blank, except for the window title.

I have googled the issue and so far nothing I tried worked. Tried:

-Rebooting Unity and computer
-Installing latest version of Unity
-Removing Library folder and starting Unity again
-Clean checkout of branch
-Modifying Packages/manifest.json (this broke the project)

I have Unity 2019.2.6f1 and 2019.2.12 installed and I am experiencing this issue on both versions.

Any help would be appreciated,

Greets,

Floris

2

The editor windows are working properly when I made a new project with the files copied over and packages reimported. After that I did a diff between the broken version and the working version. After some trial and error I found that the error is related to the file ProjectSettings.asset. I have a feeling that going through the version upgrade process a few times causes the blank editor windows.