• VSCode Version: 1.24.0
• OS Version: Windows 7

Steps to Reproduce:

1. Create the following document

dorfus
hamnut

2. Place the cursor at the d and go right three. Then go down. The cursor is at the n. Good.
3. Place the cursor at the end of dorfus and go left three. Then go down. The cursor is at the n. Good.
4. Place the cursor at the d and hold down shift while going right three. Release shift. Go down. The cursor is at the n. Good
5. Place the cursor at the end of dorfus and hold shift while going left three. Release shift. Go down. The cursor is at the end of hamnut? <--- BUG

I expect the cursor to be at n in every case

Other applications, for reference:
visual studio: good
wordpad: good
notepad: good
firefox: good
IE: good
chrome: mysteriously works today, but didn't when I wrote this bug
gedit: "broken" also, but on second thought, maybe it's sensible to some people.

In any event, it's also senseless to some people.

Does this issue occur when all extensions are disabled?: Yes