Desktop switcher doesn't show background

[Giacomod]

I recently upgraded to W11 and now whenever I want to switch desktops, or create new ones, my background does not show up on the desktop switcher. It doesn't affect my workflow, just my OCD. Is there a way of fixing this?

[#2]

Seconding this, I first encountered the problem after cleaning the "Thumbnails" cache with the official Windows "Disk Cleanup" utility.

However, I am unable to get Windows to update the cache, even after changing the background image several times:

A screenshot of the Desktop Switcher showing two desktops with missing wallpapers.

Does anyone know a method to force Windows to re-generate the thumbcache?

[#3]

I have the same issue and looking for a resolution.
Has anyone found a fix?

[#4]

Got the same issue, looking for a resolution.

[#5]

I just figured it out (at least this worked for me)! I had to go to Personalization>Background and select the image again and it acts like it's uploading the image to the desktop. In task view (desktop switcher), it shows up again!

[#6]

For me, this fixed it:
File Explorer > 3 dots > Options > View > Uncheck "Always show icons, never thumbnails"

I guess Windows is using the same thumbnails that are generated in File Explorer for the desktop switcher... Might try to file a bug report with this info.