Hey!
Nice catch with the duplicated custom event, deleted that now.
Yeah, this but with the event isn't supposed to happen... I'll take a look and see what changed between the two versions. In v1.8 I fixed a bug where the first event/sound played by a mesh would ignore an initial delay, so it might be related to that part of the code. SInce it worked in the past, I'll be able to look at older code and get it running again!
I'll admit I have a bit of a queue of things to fix right now, but I'll keep you updated for when I've fixed the bug!