Followed Justin's advice and the Endermen were teleporting down to the bedrock below. I would still consider this a bug, though it is good to know that they are not vanishing into thin air.
Probably, but ejecting the fuel definitely seems like unintended behavior since the specific fuel type doesn't make a difference to the item being smelted
I had assumed the crafting table was intended behavior to free up the GUI to view the recipe, which is why I didn't include it in my report. Thanks for the blast furnace update - I forgot they existed!
Confirm as well
@Galaxy_2Alex Just confirmed in a testing world. Endermen do not even teleport away when hit in 1.15.2
@[Mod] Galaxy_2Alex