I know this is not a usable bug report, because I don't have a recipe to reproduce. It's more I'd like to ask the community if they are experiencing something similar:
They more I play with changing maps, zooming in/out, turning map shading on/off, adding/removing overlays, the more often it happens that Locus displays tiles from other maps. As I said, not reproducible with easy steps, but I think it happens more often in recent releases (perhaps related to the big speed-up, but might have been before).
Of course I cleared map cache, but it still happens.
Anyone else?