Tell us about your environment

• ESLint Version: 6.5.1
• Node Version: 10.16.0
• npm Version: 6.9.0

What parser (default, Babel-ESLint, etc.) are you using?

default

Please show your full configuration:

module.exports = {
  parserOptions: {
    ecmaVersion: 2015,
  }
};

What did you do? Please include the actual source code causing the issue, as well as the command that you used to run ESLint.

Online Demo Link

/* eslint no-trailing-spaces: ["error", { ignoreComments: true }]*/

/*
    There are trailing spaces on the line where this comment ends.
*/         

eslint index.js

What did you expect to happen?

1 error because the option ignores just spaces in comments, not those after comments?

What actually happened? Please include the actual, raw output from ESLint.

No errors.

Are you willing to submit a pull request to fix this bug?

Yes.

I'm not sure if this is intended behavior? I think there are no tests to confirm this.