Merc Lab transfigured gems weights might be unintentionally changed

So, long story short, I've reached merc lab in around 3h and 45 mins. Ever since then, I've been doing merc lab and now I have 7h and 15mins of playtime. I started running the lab at lvl 60 and now I'm level 68.

I just cannot drop the font stating "transform a non-transfigured gem into its transfigured version" at all. I've looked at over 30 fonts easily by now, which before I could've found at least a craft in 5-7 merc labs.

Did the weights change unintentionally?

Edit: Started to just turn random gems into transfigured if the craft doesn't pop up;

7h 30mins of playtime - I have 15 transfigured gems generated like this

Edit 2: 7h 55mins of playtime - 20 transfigured gems, stil no font that changes a gem into its own transfigured version