Surround cs[{ bug

[tedbauer]

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Is this a BUG REPORT or FEATURE REQUEST? (choose one):
Bug

Environment:

• VSCode Version: 1.13.1
• VsCodeVim Version: 0.8.6
• OS: Mac OSX El Capitan 10.11.6

What happened:
With the cursor over the [ with the following code, I entered cs[{, and a leftover closing square brace remained in between the new curly braces.
Before:

int main() { 

    for (;;) [
    ]

}

After:

int main() { 


    for (;;) { 
] }

}

Furthermore, if there is an empty line between the opening and closing braces, e.g. we have something like

int main() { 

    for (;;) [

    ]

}

and I try the same thing, there is no replacement. At the bottom of VSCode there are the following messages at each keystroke:
-- SURROUND INPUT MODE -- cs
-- SURROUND INPUT MODE -- cs[
-- SURROUND INPUT MODE --{

What did you expect to happen: I expected the opening and closing square brackets to turn into opening and closing curly braces.

How to reproduce it: Try above steps.