When resizing the tabs (Inspector, Hierarchy, etc) in Editor window, part of or the whole Editor window turns into white empty blocks.
If users resize the tabs that turned white, or move the whole Editor Window, the issue disappears.

Repro:
1. Start Unity with an existing project or create a new one.
2. In the Editor Window, drag tabs to resize them.
3. If nothing turns white, try with another tab.
4. Observe the change
5. (optional) Move the whole Editor Window and observe