This issue has been on both Stock Sprint 6.5 rom and Mighty's lastest rom to. If i pull up a txt message from the txt tab by tapping on the screen it brings up the HTC messaging app, it will break the send button if i hit all messages and use the WM messaging app. I found a work around by doing the PRL update and making sure not to lauch the HTC messaging app. But untill the PRL update is done the send button will highlight but it won't send.
I searched but didn't find any with this issue, but i wasnt sure if i just missed something or its just me. I really dont like the HTC messaging app and would be happy to get ried of it if there is no fix. Thanks in advance!!!!