Able to launch/run application while deleting it
There's a UX bug where you can launch, or have it running, the application you just choose to delete. You're able to launch it during the remorse timer it launches, but does not have full functionality since required files are removed. Even after the remorse timer reached zero and has disappeared you can launch the application, but it might not be able to start since it cannot load all files.
Also, after the remorse timer has reached zero and disappeared, the first thing to be deleted should be the application icon, so that the application is not visible. Or just hide it from the launcher while the files are removed from the system. Now the icon is visible until the desktop files is deleted, which can be quite a bit into the delete process, and that is confusing.
The question is whether all files are removed if the application is running.
I've collected the issues with deleting an application here, so some suggestions below are non-exclusive, i.e. what to do when launching and what to do if the application is running.