Don't worry, the bug does not work.
Only the friend accept window covers the exchange gold amount. The user change the gold amount to 1 and click approve. If the other user does not check if the correct gold amount is in exchange window, he may get scammed.
But it will never happen if you do a slow exchange and check if everything is correct.
You can still see the gold amount of the other user. If its 1 you will see it, so you don't need to worry.
But it scares me how many people are interested in such a bug.
Good that here are some who are against it.
If you want to destroy the whole p-server comunity, continue it.
But people will hate you if you do this.