Hi I play on S17 Zabuza and I have been running this formation and talent spec for Nine tails invasion for over a week and have had no issues.
However last night after I gave Iruka, Guy and Lee their level 60 awakening, I was running into issues with Iruka giving shields. Sometimes after giving the shields out they would instantly disappear from the team including himself before any combat had taken place. I tried using game doctor during nine tails to clear the cache etc. however it still proceeded to happen.
Other times he would give the shields out, keep his own but the rest of the team would lose them right after they appeared. I thought it may just be a display bug but after receiving an exploding hell my whole team lost hp where as it's usually only Iruka that would lose hp as he's also tanking melee swipes, other ninja would lose some shield.
Once nine tails was over I messaged Schnee in game for help, I confirmed with Schnee that it was happening outside of nine tails as well and that it was working the day before etc and that all I had changed was 3x lvl 60 awakenings. I tested with flower guard and enhancement of wind style ninja talents on instead and it worked again properly. So I had assumed that because wind dance lowers resist by 100% that maybe it was intended with the shields and it could have been not working as intended previously in fact.
However I also noticed that with Wind Dance on that it was applying and removing the shield instantly from my main aswell and that's a female, wind dance should only affect male ninja.
So either something has happened after lvl 60 awakening or something has just recently went wrong with wind dance.
Thanks in advance for any help :)