portfolio filters not displaying properly

Hi there… I’m not sure when this started happening but I’ve noticed that my portfolio filters are not displaying properly. I have several categories and previously they would wrap if wider than the page with each category title occupying only a single line but wrapping to more than 1 row of categories.
Now they are multi-line category titles and they no longer wrap to 2 rows. They extend beyond the page width and can’t see them all.

It used to work perfectly and now I think this is a bug?