Note I have tried using the .run offline installer of Qt 5.6/5.9/5.11, what seems to happen is that they work on Ubuntu 16.04, 17.10 but fail on 18.04 - this is the stacktrace for reference https://pastebin.ubuntu.com/p/Yzj5gsmwQ3/
So it seems possible that it might be some underlying change to the platform (maybe something like dbus? or a new config/dir I need to enable). Furthermore it looks like this issue may affect Qt applications when they try to run as a snap under the core18 snap. https://github.com/snapcore/core18/issues/4 ** Bug watch added: github.com/snapcore/core18/issues #4 https://github.com/snapcore/core18/issues/4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1774739 Title: Running Qt apps inside a 18.04 container crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1774739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs