This bug is fixed in Qt 5.12.3 and newer. The current LTS version, Ubuntu 20.04, has Qt 5.12.8. So this bug is already fixed for some time.
Unfortunately I don't have time to support older releases like 18.04. ** Changed in: qtbase-opensource-src (Ubuntu) Status: Confirmed => Fix Released ** Bug watch added: Debian Bug tracker #961293 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961293 ** Also affects: qtbase-opensource-src (Debian) via https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961293 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850814 Title: Copy & Paste is broken in QT apps after 50 days uptime To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1850814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs