Using the backspace key to go back is a massive PITA in browsers that have that keybinding set. Have accidently lost form input by pressing backspace, so frustrating. Backspace should only delete a character in a form and not go to a different page.
I never knew of any backspace shortcuts. Are you referring to one in specific?
Backspace has traditionally been a back button shortcut. In a similar complaint, the current key combo to navigate back across all platforms doesn't perform that action when a textbox is focused.