In reply to TobyA:
I get this too. It seems to particularly affect West Country Climbs crags for me, but also affects other areas at times (screenshot of Wintours map below). Sometimes place name labels (towns, road names) are also offset.
In what seems like a similar issue I have periodic problems where text, arrows and numbers are offset or missing from topos too.
Have tried reinstalling the app and it's even persisted through a phone change. I can't report it through the app due to security settings on my phone.