Screenplay Element Capitalization LowerCase issue

When I switch to screenplay mode, then put the insertion mark into a chunk of text, change that chunk to Scene Heading, all characters are then set to Uppercase, as they should be. When I attempt to change that chunk to Action or Dialog, the margins move but the text does not go back to lower case as it should for those two element types. Am I doing something wrong? Or would a lower case radio button explicitly declaring an element type to be lc help? Please advise. Thanks. (Great software, btw.) :question: