I’m no longer getting an edit box on the left with preview on the right when editing a post. Instead there is a more advanced WYSIWYG edit box. Not all of which is actually easier to use - for example, using 3 backticks to start some code - you used to be able to put “```js" to get javascript highlighting. Now you have to type the backticks and then separately use your mouse to select the language.
Also, without the preview box, the edit box could easily and more comfortably be wider which would help with typing.
I was also wondering what was going on - thought it had something to do with my browser! When I put in the 4 back ticks (````) to post a flow, the text scooted over to one side and a drop down with different code (?) formatting options appeared.