Coastline incorrectly displayed

Hi! Since the last 2 or 3 locus updates the coastline /rivers /lakes /etc. representation while using opemandromaps started to show straight lines and not the real contours. This problem doesn't manifest in some areas. When I change the map theme the contours briefly displays correctly, but immediately the straight lines replace the real contours. Is there some configuration that I changed without noticing or is it something that is broken within locus? Any debugging that is recommended?

I attach 2 print screens that show the problem.

Regards