Help "Messaging" app opens to compose screen


For some reason, starting today, my MyTouch 4g (LG) started opening the "Messaging" app (stock text messaging app) on the compose new message screen rather than the "All Messages" screen. Anyone have any idea why it would do that? I have searched the settings and don't seem to see anything that would make it do this.

I did a power cycle, and I cleared the messaging app cache, force stopped it, and power cycled it, to no avail.