Blog post editor user interface changed

I’m having trouble with
The WIX Studio interface for creating new blog posts. It used to look exactly like the finished post but now the font is different and black and nbot the same as the Color theme. When selecting Prevoew or publishing the post it looks like the correct color theme again. Why is this happening?

Working in
e.g. Wix Studio Editor

Site link
Only in editing version

What I’m trying to do
I need the design of the editor to look like the published version.

What I’ve tried so far
Cache, incognito windows, differnt browser, unpublishing and publishing again changing colors manually, etc. etc.

Extra context
I published my last blog post in June and the ditor was working great (design of font and color was exactly the same as published design) and todayI came back and it’s screwed up. Wix support was of no help

This is the editor (composer) version:

And this is correct Theme colored version:

What you need to do is press Ctrl + Alt to select all the blog text, then click the Edit Font Color option. In the top bar, select the “A” with the underline and change the text color to white. You can also check by selecting Reset to Default—if the correct theme is applied, the text should automatically appear white. Otherwise, select the entire text and manually change the text color to white.