There is now a candidate patch in https://dev.clojure.org/jira/browse/CLJS-2793

This one might be good to do before a release (it is likely easy, and it provides a way to see spec failure details) https://dev.clojure.org/jira/browse/CLJS-2946

(It acts as a workaround for https://dev.clojure.org/jira/browse/CLJS-2945)

I wish to lodge a complaint. Mike Fikes and David Nolen do so much work on ClojureScript that the Clojure JIRA dashboard is overwhelmed by their activity, and it is difficult to see the activity of other Clojure projects there.