@hlbkv gnome software can handle debs and flatpaks (and on Ubuntu also snaps I think). The app itself is a deb, so it is not surprising that it can be installed. The apps that end up being able to be installed with it are probably also debs.

@arubislander I've looked at the logs per your suggestion, but strangely enough the app does not list any log pertaining to Sublime Text (which I would expect to find under focal_sublime_*), and I don't find any reference to it in any of the lomiri-* logs. As an update to the initial question, lomiri-app-launch focal_sublime_0.0 reports Started: focal_sublime_0.0 with no error, but like with the desktop shortcut, nothing is launched. Also, occasionally just clicking the app shortcut will fully kill/power off the OS.

@hlbkv said in How to uninstall/remove packages in a Libertine container?: as of Feb. 2025, the methodology in the official documentation doesn't work. I think it hasn't worked since the move to focal. But there is no one yet who has taken it upon themselves to update the documentation on that point.

@kugiigi I do have a 'X11 support' running anytime I load up firefox, not sure if that's a staple of xwayland or xmir.