The issue related to changed in Qt 5.15 and it has been fixed in master of Stellarium. Please check our PPA: stellarium/stellarium-beta
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1904693 Title: Setting windows can not be closed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/stellarium/+bug/1904693/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs