Discovery only opens in a maximized window.

[Flokos]

To open the discovery application, i have to minimize all the windows so that the discovery opens directly in the maximized window, otherwise it will crash and close. Does anyone know what it is or how to solve it?

[Schwarzer Kater]

Welcome.

Did you add Flatpak support without the Kubuntu Backports in 22.04? Then see this thread for problems with Discover.

For troubleshooting in Linux one can always try first if the error also occurs in a new user account.

We also don't know anything about your hardware or your system, e.g. if you use third-party addons, themes or widgets…
Or when this error occured (what did you do before?).