Pressing backspace whilst typing an SMS causes the screen to exit to the "Delete by Selection" view, how can I stop this?
Found a thread of people with the same issue.
HTC was contacted an to fix they said factory reset your phone:

With the phone turned off, press and hold the Volume Down key.
Briefly press the Power key.
Wait for the screen with the 3 Android images to appear.
Press the Volume Down key twice to select CLEAR STORAGE.
Press the Power.
When asked to confirm, press Volume Up

HOWEVER this has not worked for many users.
The second fix would be this:
*hey i will GWY&lt;----- when you make a mistake like that instead of tapping the backspace button to get rid of your mistakes. Press AND HOLD it until it gets rid of your mistakes its a SLIGHT fix but its ALOT easier to have to deal with the whole delete by selection issue