clojure.edn/read invoke user-supplied reader functions when tagged literal is to be discarded by discard macro

Question

According to edn-format/edn specification

A reader should not call user-supplied tag handlers during the processing of the element to be discarded.

But with clojure.edn/read

user=> (clojure.edn/read-string {:readers {'foo (fn [val] (prn "!!!") val)}} "#_ #foo [1 2 3]")
"!!!"
Execution error at user/eval216 (REPL:1).
EOF while reading