Error in form

[AR4Z]

When I use lining.js in a form that has an input element with type="hidden", the browser is blocked once the script has been executed, many text-lines have been created before the input.

here is an example: https://codepen.io/ar4z/pen/NLNxzw

Any idea why this happens?
Thanks

[zmmbreeze]

Hello, could you bring me more information. I can't produce bug in Chrome 67.0.3396.99.
Which browser did you use?

[AR4Z]

I'm using Firefox 61.0.1