By [removing instrumentation from wine_dbgstr_[aw]n](https://gitlab.winehq.org/bernhardu/wine/-/commit/5202d12e92b0499d66160b48d5...) I received no more such unwanted positives.
As far as currently I just still one issue with a lstrlenW which I think this merge request https://gitlab.winehq.org/wine/wine/-/merge_requests/7201 would be a better fix.
Therefore it looks like this merge request ended in smoke and I am going to close it. Thanks for all your help and sorry for the noise.