Apparmor problem with snap-store? Ubuntu software not working properly 20.04
This issue has existed for a long time. Ubuntu's Snap store isn't well-maintained and doesn't perform properly. As a result, in Jammy 22.04, they've chosen to use Gnome software instead. Gnome software is working fine without any issues. You can install gnome software using:
sudo apt install gnome-software
If you want to remove the Ubuntu software app:
sudo snap remove snap-store
Gnome software is way better than the default application center. The user interface is nearly the same.
Note: Ubuntu Snap Store is a re-designed version of Gnome-Software but unfortunately with bugs.
You can launch gnome-software using:
gnome-software
You can also launch it using the application overview.
Here is how it looks like:
Here is the UI of Gnome Software in Ubuntu 21.10: