I have the same issue on my 2019 Passive Activity Loss. TurboTax Premier does not show that you have a unallowed loss to be carried over to following years. However, on Form 8582 (2019) page 2, you can find "Worksheet 3-For Form 8582, Lines 3a, 3b, and 3c....". And a "Prior Year Unallowed Loss" can be entered there manually (if TurboTax does not transfer the prior year unallowed loss automatically.
