It shouldn't be a surprise, that UA doesn't leave #Bakhmut. It seems that the only thing Russian Army can do is to completely level cities they're attacking.
Earlier were retreating when having only single escape route, but it seems it's more sensible to defend in completely destroyed city (instead of letting RU destroy another one).
I guess the fact that decimated poorly trained (and illegal) Wagner Group is not without significance.
As a side-effect #Prigozhin is being put aside.