Vim is disabled after performing a VsCode Action (especially Change Color Scheme)

In my settings the vim extension is disabled like this

   "vim.disableExtension": true,

and I enable it manually with the command ⌘ + ⇧ + P VIM: Toggle VIM Mode.
Once enabled everything works until I change the color scheme, which turns off the Vim Mode.

To Reproduce

1. Vim is disabled in settings
2. Enable vim: VIM: Toggle VIM Mode
3. Open a file
4. make sure to be in normal mode (in status line -- NORMAL -- is shown)
5. Change color scheme: ⌘K ⌘T -> select another scheme
   Now Vim Mode is disabled, even the status line still shows -- NORMAL --
   e.g. by pressing w, w is literally add to the file instead of moving to the next word

Expected behavior
Vim mode is still enabled after changing color scheme.

• Extension (VsCodeVim) version: 1.11.3
• VSCode version: 1.40.2
• OS: MacOS Mojave 10.14.6

Additional Notes
I'm think there are other actions (despite changing the color scheme) that disable the vim extension as well.
I'm might came across such issues, but right now have no example.

Reproduce the issue in VS Code 1.40.2 with VsCodeVim 1.11.3 by disabling Vim, toggling it on, and changing the color scheme. Start by tracing the VIM: Toggle VIM Mode command and the color-scheme action; done means Vim remains enabled and w moves to the next word after the scheme changes.