I was also facing the same issue on my new installation of Ubuntu 22.04
I'm using a 1366x768 display, and it is probably something to do with the scaling.
I found this post on Ask Ubuntu, that suggests a temporary workaround https://askubuntu.com/questions/1404384/how-to-change-app-icon-size-for-ubuntu-22-04-lts
I was also facing the same issue on my new installation of Ubuntu 22.04
I'm using a 1366x768 display, and it is probably something to do with the scaling.
I found this post on Ask Ubuntu, that suggests a temporary workaround /askubuntu. com/questions/ 1404384/ how-to- change- app-icon- size-for- ubuntu- 22-04-lts
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