When I rename any station, all other stations with the same name get renamed too. Is there a way to disable this? It breaks my building process - I stamp blueprinted stations with preset almost-filled-out station names, but then I can't give them specific names, as they ALL get renamed at the same time.

hello, you have try to check and uncheck "options/rename all stations", I saw this bug

Tell me, in which menu is this setting?

Also, in vanilla there is an analogue of this function (Hold ctrl when confirming a new name)

this menu appear when stop train menu opened