Since RC1 I had this issue but I did not report it 'cause I thought I was a normal pre-release bug.
If I call the app from the terminal, It will not display any message. Clicking the calc icon does nothing, but when I call “top” from the terminal, it reports it as if it were running.
I have already installed OS11 from a new DVD (not RC1) and the behavior is the same.
Everything (I’m aware) is working just wonderfull.
Thanks in advance
Note: using OS11, GNOME.