One thing I noticed on LR-5 was last 5% plasma bombs would drop double time. I thought it was a purposeful change to make it hard again. But, I switched to next toon and ran and it was like before. Also, once (donkey Kong) did step back right before smash and we took a hot soup bath.
donkey kong only steps back if ur to close as the tank, i stand in the front part of the red target circle and haven't had a problem with this. i seen the tank missplaced and this new step back happens 100% of the time now, tricky devs doing this without putting it in the patch notes. for the bubbles he has an enrage timer that cuase him to drop bubbles like rain and even on the tank and thats he way of clearing the group out. the buff he gets is lava charged i think for his enrage