A bug with the icon display
Here's a weird bug I saw happening mainly with the Settings Manager: Peek_2021-10-01_04-10
It opens up under a different icon and a different name...but refreshing the panels fixes it. This happens with other apps too at times. I noticed doing that when I am installing some applications. I use Manjaro btw.
Maybe is due to one of these that are executed after the transaction ends:
Running post-transaction hooks...
Arming ConditionNeedsUpdate...
Warn about old perl modules
Updating icon theme caches...
Updating the info directory file...
Updating the desktop file MIME type cache...
Transaction successfully finished.