Let me first start off by saying that this problem is in Firefox only.
I'm trying to use the ImageEditor in a simulated "popup" with an iframe inside of it. See the attached example-usage.jpg for a sample of how I intend to use it.
The typeError specifically occurs when LiteView.js from the ImageEditor resources. See the attached console-log.jpg for the screen capture of the console log indicating the error.
I know that Firefox has issues with getComputedStyle if the iframe is hidden with display:none - mine is not. I know that there are several other quirks with getComputedStyle in Firefox specifically.
If I move the editor out of the "popup" and into a regular page it functions fine.
Any solutions appreciated.