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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1969577 Title: Small icons in app grid of Activities Overview To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1969577/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs