Inconsistent compiler behaviour

[omgMath]

Due to migration reasons we've ended up rendering only HTML. We've noted sometimes the content is rendered in additional <p> </p> tags, resulting in invalid HTML.

Strangely that happens every second time, i.e.

const {compiler} = require("markdown-to-jsx");
for (let i = 0; i < 2; i++) {
    const compiled = compiler("<p>From 20. to 22.12.</p>");
    console.log(compiled.props.children);
    console.log("----------------");
}

results in the following output:

[
  {
    '$$typeof': Symbol(react.element),
    type: 'p',
    key: '0',
    ref: null,
    props: { className: undefined, children: [Array] },
    _owner: null,
    _store: {}
  }
]
----------------
[ 'From 20. to 22.12.' ]
----------------

Altough we are not yet using 7.1.0, it also occurs there.