I had stopped using my Dell WD15 docking station because reinstalling openSUSE Leap 15.1 was going to be too much work! I would like to share some more information: 1. The upowerd messages mentioned in comment#0 continue to be printed even after disconnecting the docking station. 2. "udevadm monitor -u" continuously prints events of "change" events for USB devices. 3. If I kill all of the systemd-udevd processes, then the issue seems to be gone. But as soon as I connect the docking station again, all of the problems mentioned in this bug show up! I'll attaching output of udevadm monitor -u and other commands to this bug.