Rimefur Reindeer not working correctly with Time Bubbles

Psychomachia

The common WOE creature Rimefur Reindeer (white elk, 3/4, for 7 mana, that reads: "When an Enchantment enters into play under your control: Target creature gains Stun Counter 1.") triggers when a Time Bubble token support (which is an enchantment) created by whatever blue PMA card you use comes into play, as it should, and lets you target a creature - however, the targeted creature does NOT receive a Stun Counter.

Mainloop25

Yes, and the stun counters don't stack either, they stay at 1 no matter how many times you trigger it.