Trading and a circle

I love the new trading system

One thing.

Every now and then with a trade you get this circle. It doesnt connect. This happened before too but before the new system (which is amazing) there used be an x to close it and cancel it and it would just go back to the previous page. now there isnt and to get out of it you need to hit the back button in the browser which takes you back to main page (and you lose where you were in the trading page)