We’d need to do more research here. SGPro uses a series of services to resolve coordinates and so, if something has changed with these services, then changing versions of SGPro would yield the same results.
Do you have logs showing creation of this mosaic? I’d be curious to see if it has errors or issues with the primary service, is falling back to other services, etc.
Further guidance is here:
In the meantime, I will see if I can reproduce the barnard150 issue shown above. Maybe this is a math issue that has been present for a very long time and never reported?