Formating tags showing in post?

Hey team, i m not sure if it’s just me or other people have seen this but i seem to be seeing alot of post that show their formating tags in the post, things like paragraph tags ‘p’ and if there is font adjustment ‘font’, the font tags, enters with br tags ‘br’ …

Have we turned off something recently thats causing this? the strange thing is that i dont see it all the time but every so often there are post with that issue.

check my quoted post at the bottom of the page:
http://www.kirupa.com/forum/showthread.php?t=222301

and also here:
http://www.kirupa.com/forum/showthread.php?t=230980

what you guys think?