The FontChoice plugin actually provides three drop downs to the Editor. These drop downs provide features such as selection of a font face, definition of a font size, and defining a type of block formatting to apply to selected text. In versions of dojo prior to 1.4, these worked, but they behaved differently in different web browsers. Not only that, but they didn't wrap well if the editor toolbar wrapped.
Well, all that has been fixed as of the Dojo toolkit, version 1.4. The internals of the FontChoice plugin have been reworked and extensive testing performed, both manually and through the development of comprehensive automated unit tests, to ensure that they operate consistently on all browsers supported by the Dojo Toolkit. Not only that, but even the minor complaints were corrected. They now wrap far more cleanly. And another feature that was added due to requests by many of our users, the plugins now allow users to specify how the drop downs display the options. There are two modes, the default mode is preview mode. This means the options are displayed in a way that demonstrates what the option will look like when applied to the selected text. Or, if the user prefers, the options will render in simple, plain text.
Give the reworked FontChoice plugins a try! I think you'll like the improvements made in the dojo toolkit, version 1.4!