It happened yesterday to me, I can confirm. Probably some xorg changes? some qt issue? I would say this isn't a vbox fault
** Changed in: virtualbox (Ubuntu) Status: New => Confirmed ** Changed in: virtualbox (Ubuntu) Importance: Undecided => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1666059 Title: Main virtualbox window resizes itself 4 or 4 times - then no start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1666059/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs