Some states Even used it as a political statement to underline who is in control of the area.
This has happened frequently in many periods and locations. Even in the UK, however many placenames there carry their origin in different polities and languages.
Name changes have happened of course in cities that are now Polish which had earlier names. Some close to the original, some less so.
Löwe or Löwenstadt would be more fitting
It derives apparently from the medieval German-language name Löwenberg.