Entity damage events do not work with boats, minecarts and armor stands

Attacking any type of boat, minecart or armor stand does not trigger entityHitEntity and entityHurt afterEvents in 1.4.0-beta

Steps to reproduce
1. Write a script that is using entityHurt event in script api v1.4.0-beta
You may use this script or the sample add-on (bug_bp_new.mcpack)
2. Launch the game
3. Try to trigger the event

Observed results:
Attacking Boat, Minecart or Armor Stand entity does not trigger entityHurt event
Attacking any other does trigger those script events
No console log messages shown

Expected results:
Attacking Boat, Minecart or Armor Stand entity will trigger entityHurt event

Event is triggered when I attack the cow

But is not triggered when I hit the boat