For bugs in the Composer application, the high-level application that is used to create HTML documents. Appropriate bugs include those not belonging to the core editor engine, including an inability to launch the composer application and problems in the general user interface of the composer application or toolbar, such as incorrectly behaving toolbar buttons and menu items, and incorrect dialog behavior. Please see the bug description for Editor: Core for more information.
At the moment cmd_fontSize does not reflect the font size of the content which has been selected or, if none selected, the content at the caret.
It should probably behave in a similar way to cmd_paragraphState or cmd_fontFace.