I have a related issue with css in the footer part too: GLOBAL FOOTER - Fluent Forms CSS disappeared inside slide after update to 1.2.8.6.1
@paul Thank you very much for your edit posts, I also will try to use the workaround you mentioned in edit4 
I have a related issue with css in the footer part too: GLOBAL FOOTER - Fluent Forms CSS disappeared inside slide after update to 1.2.8.6.1
@paul Thank you very much for your edit posts, I also will try to use the workaround you mentioned in edit4