uint32 underflow during Faustus respec without enough money

I guess I can't paste in a screenshot but trust me bro, I have 192 gold and when I tried to respec the money goes to 4 billion. Also, I could only reproduce this when unallocating a passive in a Large/Medium Cluster Jewel... but not a small cluster jewel within that. Not a big deal but kinda weird!

It's kind of an exploit because it will let me go through with the respec and I can get me like 4 points back for free. Still worked after restarting game.