My experience with that matter and how to reproduce: Ubuntu 20.04 (development) installed.
Ubuntu dock bar at the left (or right): You can easily re-arrange the icons by dragging one of them up or down with your mouse and pressed left mouse button. When hovering between two icons, they slide up and down to create space for dropping the icon that you want to move. Now relocate the dock bar to the bottom edge of the screen with Settings - appearance - position of the dock: bottom Now when attempting to move an icon, the other icons do not leave space for dropping the moving icon, but they move somewhat in groups. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1867406 Title: Ubuntu 20.04 Dock/Taskbar icons To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1867406/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs