"Reply a request" Configuration

"Reply a request" Configuration

Hi,
I have the same problem like:
https://pitstop.manageengine.com/portal/community/topic/repeating-subject-title-when-replying-to-users-reply-in-requests
https://pitstop.manageengine.com/portal/community/topic/reply-a-request-configuration
My "Reply a request subject" configuration is: RE:##RE-$RequestId## : $Title
My delimeter: ##
But, when I try to reply: RE:##RE-4181## : RE: #4181# RE:
Before i read about delimeter My "Reply a request subject" configuration was: RE: #$RequestId# : $Title
What did I configure wrong?