Game Over After Selecting Big Blind in Endless

[RazzberryMocha]

I was playing in endless mode going for the naneinf score when I selected the big blind and got a game over on the blind selection screen. This wasn't from the alternate game overs such as running out of cards in your deck as far as I can tell. Can anyone tell me what could've happened or if this is a bug. The seed was H7CJE8ST. Sorry I forgot to get a screenshot.

[Goblin]

That's... certainly a new one. You remember what kind of jokers you had?
Only thing I could think of that could cause a game over at the start of a blind is if you lowered your handsize to zero, but you'd usually at least be aware of that happening. So if you'd been going wild with Ectolasm spectrals, that'd explain it.

[RazzberryMocha]

I had used a couple of ectoplasms and maybe had a minus hand size joker on me. I don't remember my hand size going below around 3-4, but I may have lost count having a hand size of zero is probably why I died. Thanks so much.

[Goblin]

It's easy to miss, but ectoplasm's handsize decrease increases by one each time. So first one's -1, for 7 handsize (by default). Second one's -2, leaving you with 5. Third one's -3, so you have only two left.
So a fourth one, or having Stuntman, will kill you.