I noticed this when I was having a poke around some site settings today. An arrow symbol is randomly appearing. Images below show examples from two different sites both on latest version of discourse.
5개의 좋아요
Thanks for the report! The issue can be seen on this site’s settings pages as well. We’ll get it fixed.
1개의 좋아요
I see this has been fixed now. Thanks @j.jaffeux 
2개의 좋아요