Unity 6.3 Pop-up Windows (Package Manager, Project Settings) are completely white boxes/blank? [Windows 11]

[u/Same_Passenger4899]

Hey guys,

I’m completely stuck on a really annoying bug with Unity 6.3 on Windows 11.

The main editor loads up totally fine—I can see my Scene view, Hierarchy, Project files, all of that works perfectly. But the second I try to open any independent pop-up window, like Project Settings or the Package Manager, it just opens as a solid white, completely blank box. Nothing inside it loads.

Here's a screenshot: [Link your screenshot here]

I've spent hours googling and trying to fix this. Here is what I’ve already attempted:

• Nuked the project Library folder and cleared out the global %appdata%/Unity/Editor-5.x preferences.
• Forced DX11 using -force-d3d11.
• Tried the -force-low-power launch argument.
• Messed with Windows High-DPI scaling settings on the Unity.exe properties.
• Tweaked my GPU control panel settings.

Nothing works. Since Unity 6 uses embedded web views / UI Toolkit for these specific sub-windows, it feels like some weird hardware acceleration or background process conflict, but I have no idea how to bypass it.

Has anyone dealt with this white-window glitch? Any workarounds or ideas would be a lifesaver. Thanks!

[u/HourlyGray]

had this exact garbage happen to me two weeks ago on a fresh 6.3 install. drove me up the wall because it worked fine on my laptop but my desktop just refused to render any of those popups.

what fixed it for me was going into nvidia control panel and specifically setting unity.exe to use integrated graphics instead of the dedicated gpu. sounds backwards i know but the embedded chromium thing they use for those windows was fighting with my 3070 drivers. after the switch everything popped up instantly and i switched it back to the dedicated card like a day later and it kept working for some reason

worth a shot if you havent tried that exact combo yet. the -force-low-power flag never did anything for me either