This is the bug:

VSCode version: 1.41.0
OS: Ubuntu 18.04.3
I don't see this.
What theme is this? Is it only in the setting UI?
It happens with every theme. Not only for me but for my teammates too.



The darker the theme, the harder is to notice it.
I did tried to reinstall it from zero but nothing happened
Ok, with the blue theme can see it as well.
It's a Electorin/Chrome rendering issue as the regions are matching the rendering layers:

You can workaround it by disabling the gpu acceleration:
code --disable-gpu
Nice! I can confirm is "fixed" with that flag
This issue is still happening in linux in the latest version (v1.47.2) (and is still being fixed by using the --disable-gpu flag).
Can you test the insiders version https://code.visualstudio.com/insiders/ that has a newer runtime, thanks!
Done! I can confirm that is fixed with the latest insiders version! Thank you! Feel free to close the issue
Thanks for the confirmation!
The fix will also be available in upcoming stable release.
Most helpful comment
The fix will also be available in upcoming stable release.