The over-sensitive swipe to defend bug appears to be back again in 9.1
When tapping the toon buttons at the bottom of the screen to attack, this bug causes you to defend or trigger 6* active AR instead, as though you swiped the button instead of tapping it. This can result in a enemy toon you were about to kill or neutralise being able to use AR on you and potentially turn the battle in their favour.
It most frequently occurs when tapping the buttons in quick succession to mass attack an enemy toon but can also sometimes occur when individually tapping too.
The buttons should have to pressed and swiped (Slide finger a reasonable distance) to active defense or 6* AR.
There was a similar bug a while ago but it was fixed.