I'd love to use the debugger, but I can't get it to break in a live luminus app, only when evaluating forms in the buffer. What would you recommend I start to look at to investigate why this happens?

If I try to add #break before starting my app I get the following error when attempting to start it:

Caused by: java.lang.IllegalStateException: Attempting to call unbound fn: #'cider.nrepl.middleware.debug/breakpoint-reader

@endrebak how recent cider you have installed? It's usually working very well in our web app based on ring.