Animation of emoji can't be disabled
Several custom emoji on the fediverse are in the APNG format (for instance several from the blobs_gg emoji pack). I use a browser on which the support for APNG is broken or incomplete, so they are flickering (and this is very annoying). I haven't seen a way to disable the animation of those emoji in Pleroma.
On Mastodon, the play-on-hover option also applies to animated emoji, while the "Play-on-hover GIFs" option on Pleroma does not.
So I propose to either rename the option "Play-on-hover GIFs" to "Play-on-hover animations" and apply it to APNG files and emoji, or add an option to disable animation of emoji.