Immortal enemies?!

Not sure if anyone else is having this issue, but since the start of the season I’ve run into enemies that DO NOT die. Enemies around them die, I die. They do not.
This makes finishing bounties impossible if all enemies must be killed to trigger completion. It’s getting just a little infuriating.

Read the stickies at the top. There is a reason they are there.

It is a known issue.