With ver 6.5.0 it impossible to add a CSS to an ID with the appearence panel using the “+” button.
Thank you for the report! We fixed this bug in the just released Bootstrap Studio 6.5.1
Hey @martin , Still not working in mac, even after update
working for me on Mac M1. TY
If you are on 6.5.1 and it is not working, can you reach out to us from our contact form with more info?