It looks like DM-15098 introduced regression in the method that populates regions, it looks like regions are added to the Patch table but corresponding PatchSkyPixJoin table is not updated.
Make dependencies optional in sets-of-DataUnits lookups
jbosch, I have a rather trivial fix for this issue and I have added unit test for it. Jenkins still builds but I verified that ci_hsc now makes correctly filled tables. pschella, you are welcome to check if this patch contradicts grand design of the registry.
JIRA still has not picked up PR: https://github.com/lsst/daf_butler/pull/74
Review complete. One comment on the PR. Thanks for tracking this down!
Thanks for review! Updated docstring, merged and done.