When it does not require a scroll bar, the server list in multiplayer and the list of worlds in singleplayer will repeatedly jump up and down, as if trying to align with the top, then the center, then the top again, and so on.
MC-50968
Server list and world list jump up and down
Resolved
Duplicate
0
Duplicate of MC-50965 – If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.