Server Dupe

Hey guys, so i've been searching a server with a population of about 90 active players for duping methods. I've managed to find a way where i can close my trading interface on one account and use all the tabs above and bellow the inventory. Only issue is whenever i teleport it closes the trade. I can open up GE, use emotes, use prayers while in the closed trade interface but cant request another trade, move, or challenge at duel arena. Any suggestions on what i could try next? I'll leak the server and the method up to this point to the person who can suggest to me an idea that works.
Thank you
https://imgur.com/a/iVw8ofL

I think that might ascutally work on not just runscape; i tried it on animal jam and it worked great!