I have a feature-based prerequisite that doesn't appear disabled if its already installed on the machine. The feature doesn't get re-installed if I proceed with the installation so I'm certain that the Install Conditions for the prerequisite are correct.
From what I've read on other community posts, feature-based prerequisites should appear disabled in the SetupTypeDlg.
Are there settings that could interfere with this? I'm current running version 20.0.