Hi Zeno, I just checked the PC/UEFN version of the Mutator Zone, and I’m not seeing any invincibility settings there either. (The closest thing being boolean ‘Allow Weapon Fire’)
This is a good feature request on it’s own. (The current alternative would be juggling classes?)
But, if it was functionality that existed then disappeared it might be a regression and could be worth entering a bug report for in the bug reporting section.
Not relevant to Creative 1.0 - but there’s a straightforward way to do this with Verse.
I can confirm this also was an actual setting the “Invincibility” option because I recall telling someone that we no longer need to box up the mutator zoned safe zones with invisible weapon only barriers, but rather just make the people inside invincible.