Ultimatum permanent crash

i was testing the new ultimatum meccaninc in standard for be more faster, but resoult is 100% fail every time when start an ultimatum get game crash in some stage like 5/6 i tried more than 15 times...

Same problem here, client crashes with ultimatum (playing in std too)

I'm crashing pretty reliable between ultimatum rounds as well, happy to provide crash reports if needed

same,im crashing everytime i click ultimatum literally

I can sometimes complete an ultimatum without crashing but most times my ultimatum will end due to a crash, this is in aff league

Same problem here, crashing after choosing rewards after a few waves.

Same here, crashing in ultimatum every few rounds

About half of my attempted Ultimatums end with a crash towards the later waves, about wave 6 or 7 usually. The game gets a hard freeze with everything suspended and then crashes with no error message.

The crash occurs during the wave's progression, not on initiation of a wave by choosing the difficulty modifier.

Update: it does happen during the paused difficulty modifier selection menu, I have just crashed in it. I selected a modifier, it had the outline marking that, but the begin button was greyed out and had a tooltip text "you already selected a modifier" or something like that. Then after a few seconds the crash happened.

Crashing (almost) every time.