I tried styles, kept crashing while editing text, I am using mint 18.3 and the Scribus Appimage 1.5.3, I have 1.5.4 installed to play with, an earlier post I was having trouble with styles crash #11, removed styles helped, then got more crashes til 44 page booklet wouldn't open anymore, eventually I opened in 1.5.4 and it worked and somehow recovered, back to 1.5.3 with everything mostly working...