Font handling in Scribus (I'm using 1.5.0) is very inconvenient, if you have many installed fonts. I could really save a lot of time with these features implemented:
1. The font-selection drop down in the story editor should list the already used fonts at 1st, otherwise with two fonts used (I need a Symbol-Font and a text font), every change is a pain, scrolling through hundreds of fonts in the drop down.
2. in Preferences/Fonts I can globally deselect fonts, but I have to check/uncheck every single font (select all/deselect all) would help here. Now, with let's say 500 fonts I have to uncheck manually 498 fonts. Even better than a global (de-)select all would be to enable/disable complete font families.
3. Again in Story editor if I make a selection and then a change to the selection, the selection is gone. Example: change from 12 to 10 points in size, I have to press the down-arrow twice but after the 1st press I have to reselect. This one I would consider a bug.