1. Join a server that utilizes the official squad management UI
2. Enable the UI and try to scroll or drag the sidebars (note that there must be enough players online so that they don't fit in the view)
3. Observe that the UI keeps reseting its menu position about twice a second
The issue can be tested easily eg. on these servers (they utilize the UI and have very often about 50 players online):
31.186.251.92:2302
95.172.92.110:2302