Here's all the ones which appear to be missing:

artist-recording:
297 arranger

artist-release_group:
65 tribute
62 artists and repertoire
63 creative direction
61 travel

artist-url:
185 online community
197 lyrics

artist-work:
293 arranger
162 misc

label-recording:
206 publishing

label-release:
66 publishing

label-work:
208 publishing:

recording-release:
69 samples material

recording-url:
302 license
285 allmusic

release-release:
1 part of set
3 supporting release

release-url:
78 cover art link
301 license
288 discography entry

release_group-release_group:
11 single from

release_group-url:
93 lyrics

url-work:
271 lyrics
274 score
273 other databases
270 misc

work-work:
281 parts
241 other version
239 medley

The code accidentally trimmed the entire top level: in root/edit/search_macros.tt, predicate_link_type calls relationship_node on each type group's children, but relationship_node doesn't use the immediate thing it's passed, only it's children – so, for the top level, they get skipped. Patch incoming.

ianmcorvidae/mbs-4313-edit-search-missing-relationships merged into beta.