Still waiting for the patch on 16.04 (must run LTS at work). Can also confirm this IS a CRITICAL bug as I just experienced data loss after a terminal window with several tabs (including logins to remote servers) became unaccessible after shading.
Still waiting for the patch on 16.04 (must run LTS at work). Can also confirm this IS a CRITICAL bug as I just experienced data loss after a terminal window with several tabs (including logins to remote servers) became unaccessible after shading.