Errors when using 'Include screenshot' in Firefox

[JoachimVeulemans]

When using the feedback in an li-element in Firefox, some errors occur.
<li class="hidden-xs" feedback (send)="sendFeedback($event)"></li>

The errors that I get are (more info in screenshots):

• Invalid value given for Length: "auto"
• ERROR DOMException: "The operation is insecure."
• ERROR TypeError: "Argument 1 of Node.appendChild is not an object."

The errors only occur when I am using Firefox. They don't appear in Chrome. I'm using Angular-cli 7.3.3.

[workfel]

Hi, @JoachimVeulemans , i forked this repository because the author not maintain this one.
I solve your problem on the new npm package https://www.npmjs.com/package/ngx-md-feedback.