Bug reported w/ 1.2.0 since the PC edition update (but for VR version of HouseRules):

the difficulty mods, the hard and legendary have a few glitches since the update. The enemy HP is only visible to the one who is running the mod, all the other players see the true original enemy HP. And then one out of every 5 times you go down, you aren't down for anyone but the one running the mod, I see myself standing and the others see me standing so they can't step on me to revive me and I can't revive myself because my card hand is gone.

After some discussion with the reporting player, it's likely the host was on a previous version of HouseRules (1.1.0) which was known to have this issue but has since been fixed. Have not been able to reproduce this issue. Closing until someone else reports this bug with the latest version.