Hello,
I’ve just noticed that the footprint of band B1 in Sentinel-2 L2A is still not correct.
The related issue [SNAP-3442] S2 Collection 1: Masks detector_footprint-B01-## do not fit to B1 size in Level 2A - JIRA (atlassian.net) is resolved for version 9.0.2 but as you can see in the image below the issue still exists in that version.