Takes several clicks to attack

Doing Traitors adventure today I noticed that while attacking the final White Castle, I had to click on the castle several times before the click would register. After clicking on the castle a few times with nothing happening I had to mouse off the castle then come back to it and click on it to get the click to register. It throws off the timing for blocks and causes undue loss of troops.

It seems like maybe it's due to the enemy troops display that pops up over the camp when the mouse hovers??

Is anyone else experiencing this?

Oops. I see that someone else has already reported a bug like this. Sorry for the duplicate.