Wrap text on longer File/Title Names

I searched a bunch but couldn't find the answer - I've seen some screenshots where this is happening but I can't seem to find out how... 

My titles are always cut off and don't wrap to a second line so you can read the whole title.

Here's a screenshot of the "Plex Theme + Currently reading comics mod " where the title does span two lines - but when I install that theme it still looks the same on mine :

HOW DO I MAKE MY TITLES WRAP?