Emojis are essentially text. If they exist in these snippets you will see them, we don’t do anything to make them show and there’s not much we can do to stop them from showing.
Smilies would require additional processing to render them as images. This is just something we don’t do.
Essentially the snippets are deliberately plain text (with emojis a sort of side effect of that) so that’s why this is happening.
Thank you for reporting this issue. Activity feed snippets are plain-text extracts of the message: formatting is stripped and smilie codes are not converted to images. Emoji appear only because they are ordinary text characters. This matches how these snippets have always behaved.
This is an automated assessment. A member of staff may review and update it.