Embedded markdown recursion error

[bcomnes]

Sublime Text build number

4152

Example Code

n/a

JS Custom Preferences

{
  "defaults": {
    "custom_template_tags": false,
    "eslint_directives": true,
    "jsx": false,
    "custom_templates": {
      "styled_components": true,
      "tags": {
          "SQL": "scope:source.sql",
          "css": "scope:source.css",
          "html": "scope:text.html.basic",
          "svg": "scope:text.html.basic",
          "this.html": "scope:text.html.basic",
          "md": "scope:text.html.markdown"
      },
      "comments": {
        "GraphQL": "scope:source.graphql",
        "gql": "scope:source.graphql",
        "css": "scope:source.css",
        "html": "scope:text.html.basic",
        "xml": "scope:text.xml"
      }
    }
  },
  "configurations":
  {
    "Default": {},
    "React": {"file_extensions": ["js", "jsx"], "flow_types": true, "jsx": true, "scope": "source.jsx"},
    "TypeScript": {"file_extensions": ["ts"], "scope": "source.ts", "typescript": true},
    "TypeScript (JSX)": {"file_extensions": ["tsx"], "jsx": true, "scope": "source.tsx", "typescript": true}}

}

Configuration name

Default/React (any of them).

Description

When I add a md tag to the list, and set the scope:text.html.markdown scope, I get the following error:

Error loading syntax file
"Packages/User/JS Custom/ Syntaxes/React.sublime-syntax": Apparent recursion within a with_prototype action:
25000 context sanity limit hit

Maybe I am doing something wrong? Is there a workaround for this error?