Hi,
I noticed that when trying to use an emote (any emote) while wearing the cardboard knight outfit, the emote animation is immediately cancelled. Also, you don't have to be wearing the full outfit for the animation to cancel out. You can be wearing only one piece of the armor and you'll still experience this issue. Below is a link that I found that shows a gif of the emote cancelling out.
https://gfycat.com/ThunderousUglyHare
I noticed that when trying to use an emote (any emote) while wearing the cardboard knight outfit, the emote animation is immediately cancelled. Also, you don't have to be wearing the full outfit for the animation to cancel out. You can be wearing only one piece of the armor and you'll still experience this issue. Below is a link that I found that shows a gif of the emote cancelling out.
https://gfycat.com/ThunderousUglyHare