This is not a bug, it's just an ill-conceived interface functionality. There is a system name, you can rename it, but you can’t return it back. It suited me as it was before, and it was because of the "other system names" that you mentioned that I renamed this TAB. And here is not only this problem, but there is another one, which the developers just scored
https://1b.app/ru/forum/stock/13823-os---dublirovanie-puti-v-nazvanii/It’s just that the one who implements such solutions should not do it for a fuck, if only to do it faster, and not to make it thoughtful and convenient. (sorry for the french)