I’m not sure which exact build version this starts in, but when I use the latest ThinkGeo.MapSuite (version 10.6.*), I am seeing the map imagery appear shifted by 10-20 meters in a northwest direction from my actual GPS position (see attached screenshots). This is occurring using a BingMapOverlay on my map view. I have not yet worked back to determined which version this works correctly in.
Here’s images with my GPS position shown correct on Apple maps, and shifted in my app using a BingMapsOverlay…
Note: the satellite imagery in Apple maps is newer and shows 2 extra houses, while the Bing imagery in my app only shows one. But you should be able to correlate the GPS positions from each image by looking at other features, like the road for example.
Incorrect GPS position using BingMapOverlay:
Correct GPS position using Apple maps: