Guild Wars 2

@Evan Lesh.
In my case, i had it like this:
Act 1: Trick or Treat bags – Complete.
Act 2: Halloween Events – Complete. Halloween hunting – Complete.
Act 3: Mad kings world – Complete.
Emissary 3/5 (this is when i noticed my counter was not correct)
Act 4: Attend the party -Complete.
Emissary 4/5.

Same here, all but ‘attend the party’ done and stuck at 3/5.