Just noticed this happening today. If I try to go to the Typography section the page freezes and it won’t let me do anything. The fan on my laptop also spins up loud. I have tried another PC but still the same issue.
Weirdly when I tried the second time all of my customisations had gone so the fonts were still there but no selections. I added body selection and header selection but now it’s freezing again.
Has anyone else had this?