Maybe I'm just stupid and everything is working as it should, but...
Describe the problem. Be as specific as possible!:
Only the effects of two out of three pet equips equipped are shown.
I scroll through my character info card, which only shows two equips equipped.
Then I un-equip my pets one by one, and the second pet does not add to my range, despite the fact that all three are equipped with a Blue Birdy with +5 ATK on each.