I play a single player world on a Nintendo Switch. When my game was heavily affected by MCPE-164765, I created a safety copy each time I launched the game and continued playing on the copy. This (as intended) added a prefix "Copy of " to the worldname.

After a while I wanted to clean up my world name. Now, however, each time I want to edit the world name the game crashes immediately.

It would appear that:

• You cannot manually enter a world name that is too long, this works correctly as intended
• Creating a copy of a world, does not take this character limit into account and keeps adding the prefix characters waaaaay past the manual limit.
• The world name edit field can not hold enough characters to contain a worldname which has become too long which causes a game crash when too much data is loaded into the field (buffer overflow?)

Personal:

To save space on my switch, I deleted older safety copies ... but now I have no copies left with a name which is short enough to edit.

This is the only world I've been playing for a few years, please add an automatic trim on the world name length (perhaps during a copy?).

I'm currently afraid to continue to play on this world as I might or might not hit some other limit which could permanently corrupt my world.