( MetaMeta.se now shows me nowa warning that I may get banned because my previous posts waswere downvoted. So, if I still get downvotes or bullying from modmoderators, like before, with that crazy scenario,just just for trying to notify SE about a bug to SE, I will never ever again notify any bug or issue to SE, and will never ever contribute any good to this subsite).
So, let's get back to the job. I use chromeChrome (latest version), and there is obvious bug.
Look at this post.
Click to "edit" that post and without making any changes, just look at that post how it looks like in "Editor preview" page.
On my side, they look quite different (messed).