Guild Wars 2

Not sure what causes this bug but when I try to sell an item the selling window won’t load at all. I will have to restart the client which is very annoying. Is there any fix for this?

logout and log in should be all that’s required. If that does fix it, then I’m in your same situation. I’ve re-installed the game twice and I still get this from time to time. It’ll even work for several hours, then all of a sudden stop working.
For me, when the sell window doesn’t work, the buying window doesn’t work either. only the gem store and gem exchange.