I’ve tried multiple times on multiple plate-wearing characters to try and get back into the farming process for Garrosh’s pauldrons, but the boss will bug out when there’s only a single player involved, and immediately blow up before you have a chance to cross the top portion and drop down into the next room of crates.
I have attempted smashing every crate and destroying every enemy, rushing through to the point the lever ‘absorbs’ enough energy to trigger and even trying a paladin bubble, but nothing works.