Quote:
The backspace key functions the same as the "back" button in the browser if no text is selected or you aren't in a text box.

No, I didn't know this, but this had happened to me when I have been in the process of deleting a word. The curser has been in the text box next to the word I am deleting. I am going to be very careful about using the back button now or I will just compose my posts elsewhere and paste it when I am done.