Like title said, I had 2 "Looking for Love" and 5 "My Girlfriend" effects in my inventory up until at least yesterday as I recall. But they suddenly disappeared and are left with only one each, like I stacked them all up from the slot merger I don't have any screenshots of any pervious inventory, but I've done the event boss 63 times so it's not that far of a stretch that I've had multiple of those effects from all the rewards I've gotten. Just thought I'd let someone know of this weird bug xD (I was hoping to see how many "Girlfriends" I'll get from the event, but now I'm left with only 1 QQ)
When you use the slot merger it bugs them all together and doesn't give the little number showing how many you have If you go to a random channel (with nobody around!) and dropped them one by one, they will stack side by side and you should hopefully have all of your missing effects!
Ooooh I didn't think of that being a simple stacking bug and not showing the correct numbers! It is fixed now, thank you Becca !