Bug: delete-line-backward seems to delete line quite randomly when having long paragraphs

[feedthejim]

On Gmail if you type a long phrase that wraps. cmd+delete deletes until the wrapping word, which is the expected behaviour for deleteSoftLineBackward.

On outline, the line deletion stops at a random point.

outline (chrome/ff)

Screen.Recording.2021-01-29.at.12.45.11.mov

gmail (chrome/ff/safari)

Screen.Recording.2021-01-29.at.12.45.49.mov

[trueadm]

I'd expect FF to be off as we aren't using anything native there. However, it's a bit strange that Chrome is off. I'm beginning to think that maybe we can't accurately using getTargetRanges in Chrome, there seem to be a bunch of issues around it.