Confusing behavior when moving cursor between lines containing full-width characters and half-width characters

[XieJiSS]

• VSCode Version: 1.20.1
• OS Version: Microsoft Windows 7 (6.1.7601 Service Pack 1 Build 7601)

Steps to Reproduce:

1. Open a file which contains full-width characters and half-width characters.
2. Use ↑ and ↓ to move the cursor between lines
   If the text is like this:

ＡＡＡＡＡＡＡＡ
aaaaaaaaaaaaaa

and your cursor is at the end of the first line, you will find out that if you press ↓, the cursor will be right after the 8th a, which means that it is at the middle of the second line (instead of after the last a). What I want to say is that visually the cursor will move in the horizontal direction even if the user hasn't pressed ← or →. So, did you designed this behavior intentionally or this is an unexpected behavior?

(Well, I'm a Chinese user and all of the Chinese characters are full-width characters, so for me, this is a quite confusing behavior.)

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

[yh1224]

This issue is also fixed by #44259.

[alexdima]

Duplicate of #22717