Vertical trim not applying to pre-styled fonts

I’ve gone into some existing font styles to apply the vertical trim, it’s worked for any new text I apply that style to, but existing text boxes using that font style don’t seem to be affected. I’m trying to find shortcuts for things like ‘reset text boundary’ or ‘Resize to fit’ but can’t find how to quickly make all existing text boxes reset.

Can anyone point me in the right direction, on the left is the original text box that had the trim applied to the style afterwards and on the right the exact same font style on a new text box

Hey Laura, thank you for reaching out! Could you confirm me the following points:
-Is the same thing happening when other aspects of the style are updated? e.g. if you change the font size of the style?
-Have you tried running the Recompute text layout in selection quick action?