hmm for me it happens sometimes, for example a round starts and i have a team with kurenai the enemy is blitz tho so i wait for him to finish with the attacks so that i can shield my tank , however after his attacks are done and my tank is alive my kurenai skill doesnt go off even tho it appears above her head and it only activates second round.The problem is that when it does activate it uses chakra from round 2 , now idk if this is some sort of lagg but i gotta say the fight runs smooth for me i never have lagg issues with naruto maybe only when afk for a lot of time so i get DC(orochimaru attack).Also these things happen in all modes and today another wierd thing happend , while in plunder round 2 i waited for enemy minato to go off (he went insta) as soon as he was doing his combo i activated roshi and once more the icone was above his head.During the combo right after i activated my roshi the opponent activated kurenai who was position 3 and she went before roshi , so i dont think that its a ninja issue it might be something else or just a simple lagg, hope this helps :)