It sounds like you are getting spurious mouse button (or even keyboard) events from one of your input devices, which will randomly break drag operations. This does happen to people occasionally and in every case (so far) it turns out to be a broken input device.
Please try unplugging all input devices from the machine and then adding them back in one-by-one. Please also try a different mouse if you can, and hit all the keys on your keyboard in case one of them is sticking or causing unwanted events. ** Package changed: xorg (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1926976 Title: during mouse drag operations I'm getting undesired/unprompted dropping and potentially picking up of something else To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1926976/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs