neeko's hp wont change when disguise to jhin below 6 (happens randomly)

in a ranked game i was playing ahri bot with xerath sup. neeko sup and jhin were our enemies. neeko disguised to jhin. we dont know what happened but neeko had her own form with jhin's 4 shot icons and her hp was max all the time (not invincible just always showing full hp) and everybody in the whole game were watching the same thing. although when she was using clone we could see the real HP. [sg-shisa]