Autodesk Viewer AggregatedView + ACC Issues: exact marker placement in federated models

We’d appreciate your guidance on an issue we’ve been struggling with for a while.

We are loading ACC federated models in Autodesk Viewer (AggregatedView) and rendering issue markers from ACC issue coordinates.
Our problem is that we still cannot place the markers in the exact same location where they were created in ACC.

In short: we need ACC and Viewer to match 1:1 for issue positions, and we are not getting that exact match yet.

Could you please advise the recommended/official approach for exact issue placement in federated models?
If there is a reference sample or known best practice from Autodesk, that would help us a lot.

Thanks in advance.