Backspace in a textarea at the beginning of a line deletes the contents of the previous line

[jdm]

<textrea>first line

</textarea>

If you position the cursor on the second line and press backspace, the contents of the first line disappear.

[mucinoab]

@jdm Where would be a good place (file or folder) to start investigating this?

[jdm]

https://github.com/servo/servo/blob/master/components/script/textinput.rs is where the text input implementation lives (and is hooked up to https://github.com/servo/servo/blob/master/components/script/dom/htmltextareaelement.rs). It might be useful to reproduce this behaviour in a unit test in https://github.com/servo/servo/blob/master/tests/unit/script/textinput.rs, which can be run with ./mach test-unit -p script.