@ John

You wrote on May 19, 2021: I tested it in all available for me browsers and it works properly, will try to reproduce your issue tomorrow.

Hello John,

because nothing happens and the error still exists as several users wrote to me that the location filter was not working correctly, I searched for it by myself and found the error by chance.

When 'Select location in Box' and Multilingual paths is enabled, then the issue is there. But when I disable Multilingual paths the issue has flown away!

Therefore it must be still a bug in location filter.