This is new, it was working fine a few weeks ago when I was last in this app.
I have nested modules. The parent module within its app can see its Input parameters:
I go into that parent module and select the child module and I can no longer see its input parameters to pass them:
The Input parameters are still there and working - I can see the results display in the module, but I can no longer change their inputs values.
You can see them defined here: