IdeaVim cannot read (:r) a file or write (:w) to a file

If I want to insert the content of a file where is my cursor I do Esc :r /tmp/foo  but it does nothing with IdeaVim (under PyCharm)

If I want to save some lines to a file I do Esc :1,5w/tmp/foo but here again it does nothing.

Could we have these features please.


Any movement on this request?