Mouse position not relative to calling window

Hello,
Noticed another bug in the latest linux preview 2019.2.8f1. It seems the mouse position is always relative to the top left of the window/panel the mouse is over, not relative to the current window that is drawing. That is different behaviour from Windows (have found no evidence that that has changed either).
Here’s a video, the debug line is called from within OnInspectorGUI. Additionally the brush is updated using mouse position and visualizes that the anchor always is the top left (but the offset of the script within the inspector is always respected!).

Best regards,
Seneral

I experience similar bugs. E.g. I always have to click into the window first where I want to make a mouse action like e.g. zooming, moving via left mouse button + alt etc.).
I also ran into the issue that the mouse position had a slight offset to where I really clicked at. I’m Input.touches and the Input.mousePosition and both have an offset.
(KDE Plasma and same with Gnome)