Printing a namespaced qualified map and reading it back to ClojureScript fails

Example:

`(cljs.reader/read-string (pr-str {:foo/id "foo" :foo/bar "bar"}))`

fails with

#object[Error Error: Could not find tag parser for :foo in ("inst" "uuid" "queue" "js")]
Error: Could not find tag parser for :foo in ("inst" "uuid" "queue" "js")

This fails in 1.9.542 but I could not choose that version from the dropdown.