Alfred snippet expansion not working

Describe the bug
I use the Alfred app's snippets expansion feature where if I type a search key combination, the snippet would replace the key combination typed. This works globally in any application except for VSCode with the Vim plugin enabled.

I've tried disabling the plugin and it works fine.

To Reproduce
Steps to reproduce the behavior:

1. In any line, type in the Alfred snippet keyword combination
2. The snippet will appear but it does not appear correctly where it should completely override the key combination.
3. For example when I type j;cl it should replace it and display console.log() but instead displays j;clconsole.lo

** Screen shot of the Alfred snippet expansion feature **

Expected behavior
Typing in the keyword should expand my snippet. In my example above I should get console.log() but instead I keep getting
j;clconsole.lo

Environment (please complete the following information):

• Extension (VsCodeVim) version: 0.15.0
• VSCode version: 1.25.1
• OS: 10.13.5
• Alfred: 3.6.2

Additional info
There is another plugin that seems to listen for key combinations and may provide more info. There is a bug listed there that is similar:
https://github.com/neilsustc/vscode-markdown/issues/200#issuecomment-405007057

Start by reproducing the Alfred snippet expansion in VSCode with the Vim extension enabled, then compare it with the behavior when the extension is disabled. Trace the extension's key-handling entry points and verify that a keyword such as j;cl is fully replaced by console.log() without duplicated input.