Does ROXTerm currently supports ANSI OSC 52 escape sequence?

I currently can't copy/yank things from a remote server via SSH + tmux running on the remote machine into my local clipboard. I have read that it is possible to have it working with ANSI OSC 52.

I have tried it with this command in the remote machine:
printf "\033]52;c;$(printf "%s" "blabla" | base64)\a"

It should put "blabla" into my local clipboard, but it does not happen.