Callbacks (OnLoaded, OnStarted, OnError etc.) are not getting called on WebGL build

Hi,

First of all, thanks for this plugin. I have installed this plugin and hooked it into my already existing WebView system that was working on iOS/Android for year and on editor I have tested it and it works great, I get all callbacks from my current web view HTMLs and they act just like they should.

However as soon as I deploy it to a WebGL build, callbacks stops working, this applies to sample.html provided as well, it gets OnJS callback properly but all other callbacks like OnLoaded (which I was depending upon on my current HTML's since I check the URL that it tries to load i.e myHtml.html?close, myHtml.html?move) are not getting called at all.

Is there something I'm missing?

Thanks in advance

Reproduce the issue with the provided sample.html in a WebGL build, comparing the working OnJS callback with OnLoaded, OnStarted, and OnError. Trace the WebGL callback path and verify that the callbacks fire as expected, including the URL values used by the existing HTML integrations.