Autocorrect ads a character after replacing to an em dash

[devaneando]

I write a lot of markdown and use a lot of em dashes, so I want to replace two minus signs with a em dash.

But if the minus signs are after a space, they will be replace by a em dash and a minus sign "— -".

As a workaround, I tried with three minus signs and three plus signs, and the same bug happens.

No matter what characters I choose, if they come after a space, they will be replace with an em dash and a character.

And the prior space will be removed.
.
So " ---" will be replaced to "—-" and " +++" will be replaced to "—+".

Here's my config

  "auto-correct.dictionary": [
    {
      "languages": [
        "*"
      ],
      "useLargeList": false,
      "words": {}
    },
    {
      "languages": [
        "markdown"
      ],
      "useLargeList": false,
      "words": {
        "+++": "—",
        "--": "—"
      }
    },