Dev Tools -> Inline stylesheet doesn't update after making changes to styles or adding styles
When using the dev tools, I'll frequently update the style on a page I'm editing, then switch over to the inline stylesheet to copy and paste the changes I've made into my .CSS file. For some reason when I make updates, they don't show up in the inline stylesheet.
When I make changes and write styles here: https://prnt.sc/vt6mvv
I don't see them here: https://prnt.sc/vt6n97
I used to use this feature all the time in Firefox, but then it stopped working for me some point years ago. I think it was just broken by an update, or some local issue. But it's followed me across versions of Firefox and across machines.
Which makes me wonder if I just don't understand the way this is supposed to work, of if this actually is an issue.
I use this same workflow in Chrome all the time and it works just as I expect. I'd like to come back to Firefox because I like some of the dev tools better, but I just can't work in Firefox without this working.
Any help would be appreciated.