The only thing I sometimes have a problem with is when going through a payment flow using PayPal and forgetting to open the site in a persistent container. Many sites will fail to process the payment on the redirect back to the site as it ends up in another container.
I haven't looked recently, but I didn't see an option to open a site in an existing temporary container based on domain if there is one already open which I believe would solve this.
The only thing I sometimes have a problem with is when going through a payment flow using PayPal and forgetting to open the site in a persistent container. Many sites will fail to process the payment on the redirect back to the site as it ends up in another container.
I haven't looked recently, but I didn't see an option to open a site in an existing temporary container based on domain if there is one already open which I believe would solve this.