Whenever one event is moved to a different cell in Java Script scheduler, all other events appear to be moving as well. I didn't have this issue earlier, but it seems it is happening only after the latest update(22.214.171.124).
Are you able to reproduce this issue in the online demo?
There is an option to link multiple events together so they will always be moved and resized together ("joint events"):
But this has to be activated intentionally.