Odd behavior when running in Cider repl - print out of large meta data map

[JulioBarros]

So, I have a strange, to me, problem. Following the overtone quick start instructions everything seems to work fine in a leiningen repl.

If I run the making sounds commands https://github.com/overtone/overtone/

user=> (use 'overtone.live)
--> Loading Overtone...

user=> (demo (sin-osc))
#<synth-node[loading]: user/audition-synth 33>

However, when I run it inside of a Cider repl, I get a large dict of meta data (?). I don't even know what it is so don't know how to search for a solution.

user=> (demo (sin-osc))
{:synth "insane-noisesabd/audition-synth",
 :id 34,
 :target 7,
 :position :tail,
 :args {},

...

 :status #<Atom@a2e76ba: :destroyed>,
 :loaded? #<Promise@4f2cf99b: true>}

It only seems to be a problem when I run Overtone in Cider. Other code prints fine and Overtone behaves in a Clojure/lein repl.

Do I have a weird setting set somewhere? Anybody have any hints that may help me figure out what's going on? Thanks.

[Schroedingberg]

The fix from clojure-emacs/cider#2867 works for me. Could you try to use a fresh emacs config (back up your current one of course) and only install CIDER and try to reproduce the error in that setting?