Comment 4 for bug 2011751

I've experienced this issue now on Lubuntu lunar running on
- hp prodesk 400 g1 sff (i5-4570, 8gb, amd/ati cedar radeon hd 5000/6000/7350/8350)

qterminal was fullscreen (ie. F11) with chromium sitting idle on one display, and me 'fighting' with firefox issues on the other screen.. all of a sudden borders around windows disappeared & I lost pretty much access to my desktop

I noted the panel disappeared awhile, then was re-drawn? though that could have been due to upgrades that were installing. this box did NOT experience a openbox crash until AFTER upgrades had all installed.

mouse control was still active, but unable to click on windows etc. and unable to open a terminal using ctrl+ALT+T to re-run openbox... (terminal actually opened; but it was not selected so no commands could be entered into window opened with ctrl+alt+T)