Hopefully I’m wrong, but it looks like there might have been a change to openlane in April that causes magic drc errors to be ignored. I suggest checking your

drc.rpt

files. If you have a non-empty

drc.rpt

file and an empty

<http://drc.tr|drc.tr>

file, openlane probably did not flag the magic drc errors.

Fixed. Thankfully, we run KLayout DRC for tape-out as a kind of double-check for precisely this kind of situation, so the previous shuttle designs aren't affected. We'll be communicating which OpenLane versions to use for the current shuttle(s) in the near future.