Hello there!
I don’t know am I alone, who wants this feature, but I suggest to enable “backspace” button while “shift” pressed. I use this buttons combination, for example, when I write uppercase variable, make a typo and want to remove last symbol, but “backspace” is disabled.
I don’t know how hard to enable the buttons together, but in most other text editors it works. Btw, this also works right here, in this forum form.
Thanks!