Keyboard can't be used to make text selections spanning list items

[Atul Varma]

Start with the following list:

1. One
2. Two

then place the cursor at the end of On, hold down Shift and tap → three times. One would expect the generated text selection to include part of the second list item, but this isn't the case: the text selection only contains the letter e and pressing delete deletes just that letter, and none of the second list item.

Note that the intended text selection can be made using only the mouse, but keyboard accessibility is important, both for folks with motor impairments as well as power users.