I opened a session and had a staking problem with the switcher, opened a terminal and entered "unity --reset" to see if it improved things.
Since I didn't run the command in the background and couldn't close the terminal, I opened another tab and entered the command again "unity --reset &"
I tested alt-tab again to check if it fixed the problem (it did, at least for that session) then closed both terminal tabs with CTRL+D, this crash happened on close of the terminal
I've been able to reproduce (bug 860317)
I opened a session and had a staking problem with the switcher, opened a terminal and entered "unity --reset" to see if it improved things.
Since I didn't run the command in the background and couldn't close the terminal, I opened another tab and entered the command again "unity --reset &"
I tested alt-tab again to check if it fixed the problem (it did, at least for that session) then closed both terminal tabs with CTRL+D, this crash happened on close of the terminal