This is an issue I have been experiencing since the earliest versions of the Linux release. Running on either Linux Mint or Ubuntu (latest), once I go full screen its stuck there - although top right corner shows a minimize, full-screen and "X" close window button, only the minimize and close work. Sometimes even the "X" close button is gone and all that works is minimize.
If I un-install and re-install, it works for a while but eventually, without warning, will only run full screen again.
Sure would be nice to see some stability in the Linux version after so much time.
Any suggestions on resolving this inability to run MC in a window?