Well, I will first say you are right the program preview is not accounting for ignore rain delay on stations. I will fix this today but this is a purely visual issue and does not affect what the firmware does. Also, my program preview is only marking red for rain delay not sensor. I will also get this fixed today.
In regard to the actual station not running due to rain delay being set on an ignore rain station is a firmware issue. I will test this today and try to identify the cause.
Thanks for the feedback!
Update: If your stations have a space in them then no changes may be saved. This is a bug in 2.0.8 and might be preventing the ignore station setting from being saved properly.