Hello @ThaChillera, immediately below the ready to play filter button, there's an advanced filtering button. One of the filters is "Installed locally" which should give you the list of games you're asking for.
It doesn't list an installed game that's not in my library anymore though, and im 90% sure it did list those games before the big library update
Nothing extracted yet.
Your system information
Please describe your issue in as much detail as possible:
With the new library, list installed games is replaced with "show ready to play games". However, this prevents me from seeing games that are currently not in my library, and thus not playable (e.g. a beta I've lost access to).
Since this isn't windows, There is no central 'uninstall' place for all apps including steam games. Solving this requires me to manually remove the install folder, which isn't very user friendly.