SAC Story errors after DWC update 2023.4

Since the latest update of DWC to Version 2023.4.66 (Build Date2023/02/02 13:15) in Feb 2023 we noticed some strange errors/warning in SAC using DWC live data:

When using (In DWC Analyticl Dataset) the semantics "Amount with Currency" for measures then in SAC stories there is a warning icon, telling "The query is inconsistent : UnitType is defined but UnitFixed is empty. This leads to an inconsistency for the member: 'HSL01' ..."

DWC:

SAC:

This happens for existing datasets and also for new ones, also for new stories if they are based on DWC live data.

Is there any setting in SAC that we missed? Currency conversion is not enabled in DWC and SAC (no TCUR... etc)

What's this "UnitType" and UnitFixed" mentioned in the SAC error message?

Also some of our Analytical Datasets in DWC seem to be broken. In DWC the preview does no longer work. When trying to use the "Data Viewer" button the preview window shows "Internal Server Error",although the data can be read via database explorer and from the SAC. Save+deploy does not solve the problem.

Any hint?

Regards,
Thomas