I'm not sure if this a bug or by design, but when in a forum/sub-forum in fluid view, the breadcrumb at the top just shows:

"Forums"

instead of:

"Forums>Category1>Forum1"

Also, the title is just "Topics", as opposed to the title of the forum you're in, for example "Forum1...

Bug or feature?

 

That is as intended. When in Fluid mode you do not have a structure to follow like that so breadcrumbs and hierarchy have no meaning. In Fluid mode forums act more like tag filters.

That's what I thought. Thanks for the clarification.

I was really confused by this change as well so I'm glad you posted the feedback. 

I think it would be good to have the forum title/category in the breadcrumb when in the topic so you can click into it and quickly see only topics in that forum within the fluid view. Right now, if you click into a forum title/category link you'll get that. So when you are reading a topic, to read another topic you need to go back to the forum home page which is an extra step.