Rearranging tabs in grid view causes graphical glitches

Steps to reproduce:

1. Enable Tab Style: Grid in settings
2. Open two tabs: I use https://news.ycombinator.com and https://lobste.rs as an example in the video below
3. Rearrange the tabs a few times in the tab view
4. Now attempt to use either tab
5. The tabs have white blocks, the contents of a tab spill over to the other tab, the tabs cannot be interacted with

I was able to reproduce this quite consistently but not every single time.

Expected behavior:
Rearranging tabs shouldn't break anything.

1.3.9 (7)

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