Geoprocessing widget does not allow a drop down to be blank

[DougBrowning]

I have a toolbox with optional inputs that I want blank unless the user picks something.

This works great in Pro.

But no matter what options I try WAB Geoprocessing widget forces a value to be picked and it cannot be left blank at all.  This does not make sense as it is an optional parameter.

I have set Remove default values in both places when publishing.

I think I have seen this before.  I really do not want to add a None option.  I am guessing this will not get fixed at this point but its worth a shot if anyone has a way?

thanks