shift-O does not preserve indent if empty line above

[iivvoo]

Describe the bug
With auto indent enabled, shift-O to insert a line above the current line does not preserve indent if line above has no indent. Vim does preserve indent in these cases

To Reproduce

Given a piece of indented code (space indented, where empty lines contain no space/indent), with _ as the cursor

    Hello

    World_

when pressing shift-O, the expected Vim behaviour would be

    Hello

    _
    World

but the actual result is

    Hello

_
    World

Environment:

VSCode 1.35.1

Version: 1.35.1
Commit: c7d83e57cd18f18026a8162d042843bda1bcf21f
Date: 2019-06-12T14:27:31.086Z
Electron: 3.1.8
Chrome: 66.0.3359.181
Node.js: 10.2.0
V8: 6.6.346.32
OS: Linux x64 4.15.0-51-generic

VSCodeVim 1.8.1
Ubuntu 18.04

Additional context
This behaviour was correct a few versions/weeks ago.

[jkillian]

Hey @iivvoo just tried your example today, and it seems that VSCodeVim 1.11.3 is working correctly for me. Are you still seeing this issue?

[iivvoo]

I just tried, and I still experience the issue. However, it seems to work fine when editing a .go file and not when editting a .md or .py file.

This made me wonder if it could be a tab (indentation) vs. spaces thing, but setting "detect indentation" and "insert spaces" to false, resulting in tabs in the .py file doesn't make a difference.

I have disabled all extension except for VSCodeVim.

[J-Fields]

The root cause here is the same as what's described here: #1017 (comment)