Help Delete text in sms

[Belisarius]

Hi, often when i try to delete text from a SMS message I'm writing, it pops up with this 'delete by selection' screen, which allows me to delete previous messages, when in fact all i want to do is delete text from the message i'm about to send. This seems to happen randomly without any reason. It is pretty annoying as I have to exit the message application and start again. Does anybody know how i can disable this function, or what I'm doing to cause this?
All i really do is hit the backspace button on the phone.
Its a HTC incredible S running froyo

 

[Tiger79]

Im having the exact same problem. It occurs every time I write an sms, sometimes several times. Mine's running Gingerbread.

Have you been able to solve the problem?