Javascript execution pauses when WebView not in foreground

Hey all,

I have an app that uses Scandit (simple barcode scanner module), and a WebView in iOS.

Whenever the window containing the Scandit camera view is active, javascript in the WebView stops executing. At first, I thought that maybe it was just pausing timers, so I created a timer in my app to call a function in the webview via evalJS. This injects the desired javascript, but as soon as the WebView doesn't have focus, it stops executing and just starts queuing them up for when it receives focus again.

Another odd thing is that this doesn't happen in the iPhone simulator, only on a physical device.

I'm running out of things to try, does anyone have any ideas?

Thanks!