To test: - create an authority record with two 150$z fields - create a new bib in the advanced editor - link your bib to your authority - note your two $z subfields have been concatenated Tested this on master with specifically a topical term authority linking to a 650, though I don't suspect those details will make a difference.
+1 I've tested with a 630 and two $x fields and have the same experience. This seems to be a problem with the advanced editor and the linker. It is independent of a search engine (happens on both ES and Zebra).
*** Bug 27024 has been marked as a duplicate of this bug. ***
We have a library reporting the same issue in the advanced cataloguing editor with the 610 tag and multiple $v subfields