When i join 2B2T then it displays the title "Position in queue" and a number, then if i leave and join another server then the text is still there. I dont know the version but i know it happens in 1.19.4.
Servers are also "other worlds". This can be reproduced regardless of whether it's a server or not, it's just that singleplayer worlds don't tend to use titles to the extent that public servers do.
Duplicate of MC-55347.
Edit: Yes, it relates to the servers, however, other tickets such as MC-94333 are also duplicated even though it relates to servers.