I have a clean EOS-KDE installation and I have the problem:
I can install apps through yay, for example:
yay vivaldi
or
yay firefox
But they do not show up on the “menu” and I have no way to launch the app. I can for example open the terminal and write firefox, then firefox launches but I guess that the app not showing up on the menu is a bug?
Meant -S.
I tried to run the command you wrote and I had previously restarted twice. Now that I did kbuildsycoca5, they are visible. What is this command?