u/Hopeful_Plan_2436

Edit title: Thin spaces are acting like nonbreaking spaces

I have thin spaces on both sides of em dashes. But sometimes it is messing with my justification because it seems like InDesign treats them as nonbreaking spaces. I want them to be able to break.

Is this a setting or something? I like having the thin spaces around em dashes so I'd prefer not to switch them back to regular spaces.