Description of problem: Tabs cannot be moved within the window with the mouse. They can, however, be moved by right-clicking the tab and selecting where to move it from the menu options. Version-Release number of selected component (if applicable): firefox-70.0-1.fc31.src.rpm How reproducible: Always Steps to Reproduce: 1. Start Firefox (Wayland, default in F31) 2. Open a few tabs and try to move them Actual results: Tabs don't ever move, they stay in place. Expected results: Tabs should move by dragging them. Additional info: Wayland session, Firefox came installed with F31. Fresh install.
It's probably https://gitlab.gnome.org/GNOME/mutter/issues/740
*** This bug has been marked as a duplicate of bug 1647457 ***