Quartz Flute not Working.

I tried using Tesseract, and nothing happens. Celebi doesn't even show up. The same happens for literally every single option on Quartz Flute. I'm luckily in post game, but even then areas that may require tesseract, heart swap, hyperspace hole, etc are going to be unaccessible. I'm currently on 1.2.3.4, but I noticed this bug on 1.2.3 as well. Please help!