I was not able to reproduce this problem on my side. I have tested with Chrome and Edge browser, with both, the map visual shows all locations correctly in focus mode.
Please re-publish your report to service for a test. You can upload the .pbix file directly from service via "Get Data". Change a different web browser for a test. If possible, please share your sample .pbix file so that I can test on my side.
Community Support Team _ Yuliana Gu If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.