I've been developing an OOO auto-reply for my org so that when, for example, user A @mentions user B (who is on vacation) - user A will get auto chatter response from user B that he/she is on vacation. (See image below)
I wrote a method on the FeedItem trigger. It works fine as long as the chatter is an original posting. However, it does not work when the chatter is part of a thread.
I looked at the debug logs when chattering into a thread, but produced ZERO logs.
Does anyone know what is going on here? Would it be possible to write a trigger action on chatter threads?