Specific parts of the map not loading below certain zoom level

When I zoom in, certain parts of the map doesn't load. Zooming out renders the map correctly again, but zooming in brings back the grey rectangles. It seems to be always the same regions with rendering issues. I tried clearing the caché and the internal data, but the issue persists. I also tried to reinstall the app, but it didn't help.

Thanks in advance.

sralloza
It looks like a map tile was downloaded incorrectly and got corrupted in the app's cache. Unfortunately, the only solution is to reinstall the app or wait for some time until the cached tile is replaced.