Hi there!
I have the same problem of trigger not firing.
I’m using realm sync in an iOS app. The trigger is expected to fire on the write operation in order to modify a field in my document. The trigger is firing most of the time but sometimes it stops working or is working very bad and after some times it starts working well again (without doing anything).
I’m using a Shared Tier Cluster so I was wondering if this can be the cause.
Thanks for your help!