this question looks similar to [url][Solved] Canvas won't close! but actually they are not even remotely related.
The problem: When a ROOT (version 5.34/36) Canvas is open and I terminate the root session by ctrl+z in my Ubuntu 16.04 terminal, the Canvas looks fine, the plots are there but it’s actually frozen and will not close ! I could try to look for the process using “top” and try to kill it but can’t find any process name that can be related to ROOT !! So I have to reboot my system each time this annoying thing happens ! Of course I can avoid “ctrl + z” but let’s say there are situations when I want to do it anyway.
Can anyone help me close the Canvas without a reboot ?
Thanks a lot