Since few months, me and many people noticed problems concerning emotes:
-Pharah’s dancing emote looks like it has 15 fps no matter how much fps people have.
-All sitting character (or static emotes), when being on a moving object (cf Playload, moving platforms on training range, etc) will keep looking in the same direction where the emote started.
-The dancing emotes, when executed on a Playload for example, will move the character forward and make it cancelling it.
See the video for a better explanation: https ://streamable.com/67hv6a
PS: sorry for my english.