Here’s something you may or may not know.
In the Editor (where you write posts), click on the three vertical dots at the top right of the page. That opens a list. Scroll down to the bottom and you will see the last item in the list is ‘Preferences’.
Click on Preferences and you will see a list of options including this one:
‘Use theme styles
Make the editor look like your theme.
Why would you want to do this?
Well, it changes the font where you are typing. The font may look a bit cramped and rubbishy if you used the theme style, or vice versa.
In one of my free WordPress.com sites, I am not keen on the font in the back end when writing a post. The font is small and very cramped.
So I clicked on the three dots at top right, and in Preferences I unchecked to ‘use theme styles / Make the editor look like your theme.’
I thought that would do it for all future posts, but no. for every new post I have to go in each time to uncheck the option. In other words the default remains the chosen option.
I asked Support whether there was a way to set the default for all posts?
And the answer is – No, it is theme dependent. For some themes you have to do it manually each time.
Who would would have thought it?