When you are the only party member and you have the enchantment "second chance" After having your endurance reduced to 0, you will stand back up in a fight and the "you have died" prompt will pop up and force you to load a game. (even if you have begun a cast animation such as healing)
how to reproduce .. Be the only party member ..
get an item with "second chance" enchantment..
reduce endurance to 0.
this should cause combat to continue as expected after reviving due to the "second chance" enchantment..
after all there is an achievement for playing with only one party member..It doesn't make sense to have enchantments that simply don't work because there are not other party members walking around.