I am still able to stick with the classic view and to switch between the seller hub and then back. I dare say it wont be long before that stops but until then I am staying with the classic view.
Go to Seller Tools on the hub and see if Opt of of seller hub is there. If it is then click on it then when the page changes go to My ebay at the top of the page and choose Summary or Sell
It may not work but worth a try
