Hello Oliver, thank you for the quick and details answer.
Unfortunately for us it can be a big issue, since the Developer in charge of the Merge Review sees the Quality Gate and the CI pipeline “GREEN” on the feature branch, but once they merge into main branch, the pipeline becomes “RED”.
We are forced to apply workarounds like setting a temporary QG with coverage 0% just to unblock the main branch, and then set back the preview QG.
In our case at least it will be better to block the feature/bugfix branch prior to merge in main branch.
So that other merge requests can be still merged in the mean time.
Is there any other solution to this problem?