No uncut skill gems lvl 20 in maxed out temple

I am just wondering if someone else had this issue or can tell me what is going on.

Maybe its not a bug and thats the way it is... but... i run a full maxed out Fugbun temple with around 180 player rarity as well.

Since I finished the temple I did like hundreds of runs and havent found a single lvl 20 uncut gem.

Is that normal?

Before finishing the temple, when I didnt have that much rarity yet and a lot less rooms I was finding some lvl 20 gems from time to time, but since I maxed it out I had a grand total of 0 drops.

Any input would be highly appreciated.

Thanks in advance!