I have never used private tabs before. I have just started doing so occasionally (not via Tor). I notice that shields were automatically down (paypal.com), i turned them on but they stayed off saying “shields are off”, with a “learn more”. I clicked the learn more link, assuming there’s a reason why they can’t be turned on eithe for paypal or in private mode, but the page it took me to was a general help page with nothing specific about this issue.
What am I missing, can you not have shields up in private tabs?