When you activate the card effect from your hand, you’re given an option to select from two choices.
The top option: From your hand, either Special Summon 1 “Labrynth” monster, or Set 1 Normal Trap. That Set card can be activated this turn.
The bottom option: Special Summon this card.
But selecting the top option is actually the option to Special Summon a “Labrynth” monster, and the bottom option is to set a Normal Trap. So the text for the choice options are all wrong.
Bug reproduction steps
Just activate its hand effect when you have both another Labrynth monster and Normal Trap in hand.
What OS are you using