Cannot remap <C-e> in insert mode

Describe the bug The following setting has no effect:

"vim.insertModeKeyBindingsNonRecursive": [
    {
        "before": ["<C-e>"],
        "after": ["<esc>"]
    }
],

(I don’t actually want it to remap to just <esc>, but I’m starting simple.)

To Reproduce Add the above text to settings.json and save. Enter insert mode and try pressing C-e. The character on the line below the current one is copied in – rather than performing the mapped action of <esc>.

Expected behavior VSCodeVim acts as if Escape was pressed.

Environment (please complete the following information):

• Extension (VsCodeVim) version: 0.16.12
• VSCode version: 1.29.1
• OS: Windows 10.0.15063

Additional context This does not appear to be a duplicate of Unable to remap <C-s> in insert mode. In that issue, the keys that people were trying to remap were not handled by VSCodeVim. In this case, <C-e> is listed in packages.json, and VSCodeVim is doing something with the key (copying the character below the cursor).

[janhesters]

Same behavior. I tried to remap:

"vim.insertModeKeyBindingsNonRecursive": [{ "before": ["<C-o>", "$"], "after": ["<C-e>"] }]

Apparently there is trouble with remapping ctrl commands in general.

See here for the parent issue. See here for a possible workaround.

[insidewhy]

I’m hitting this issue also, it’s very annoying but not quite as annoying as #3530 which I strongly suspect has the same cause as this.