Hello,
I am not sure but it seems to this commit break the html in topic excerpts. For example the emojis not appear only the html code of them…
Thank you! 
https://github.com/discourse/discourse/commit/a2ccf0a9ff22f3e8467ac0d61f93be136bb66b31
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Thank you for reporting this. I’ll take a look.
3 likes
Alright, here is the fix 
https://github.com/discourse/discourse/pull/14203
4 likes