So this happens when you have two ninjas with a 20 chakra and BCD0 in the same lineup.
My sample lineup is
X-X-X
hash-X-X
iruka-darui-LM
LM has Lightning Armor with Taijutsu Attack and Bloodthirsty.
When on auto, LM does his std attack first two times and then does his skill.
It doesnt happen if i replace iruka with someone who doesnt have a 20 chakra+BCD0
tried to attach the .nbr file, but it says 'banned from attaching such files'