In two nearly identical alerts, why is this happening? ("Trigger action(s)" field shows "recipients" rather than "name of action".)

(In fact, the mangled alert is a clone of an OOTB one.)
This doesn't seem to affect anything except the display (although one can never be sure) - but still...
The OOTB alert with the original trigger action:

The mangled clone:

Both have identical values in the "Message displayed when this alert is triggered", near-identical trigger action configuration, similar (but not identical) values in "Name of action" fields - which I think is what's supposed to show up in the Alert Manager - and are otherwise nearly identical.

Does this happen to anyone else? Anything I can do bring this behavior back to normal?
Thanks!
(SolarWinds Platform, NTA, NPM, SAM: 2023.1.0)