Yes, which means the above question needs to be answered before we know what happened.
Do we know that bing did not had this problem when the new world region for wu6 was build from imagery? (not talking assets, only talking sat images (which are of course also assets, but you know what i mean, hopefully)
If bing had the same issue at that moment, it’s garbage in, garbage out ;). If it’s a bug that the highest detail layer is build incorrectly. it probably should have been on the whole wu6 scenery the case.