several app crashes with web page widget + loading spinner spinning "forever"

I just received a brand new AIR3 7.3 with XCTrack pPro 0.9.6.2-beta-25-g7bb61d8d. I tried to use web page widget and used my web application (html+css+js) which in case loads maps using React Leaflet js library.

1. First issue that I observed is that when the spinning loader wheel kept spinning forever. I believe that this might be due to the fact that even in regular desktop chrome, the loading spinner that gets shown in chrome tab kept spinning. Possibly due to the fact images requests for one of my maps' layers were timing out. Will need to investigate this further if this is the root cause. Anyways, it's quite UX-unfriently to have that "fullscreen loading spinner" on forever and not have any option of getting rid of it.

2. What's worse, XCTrack crashed several times (two or three times). I suspect that it's probably due to the same reasons as mentioned in 1). Is there any log in my device worth checking or do you receive stacktraces of exceptions automatically? If so, do you need any more information from me to track this down? I'm affraid that if there's any possibility that th3e webview widget might crash the whole application under some circumstances, such widget is effectively very dangerous for regular or even competition flying.