Quest browser crash

Hi all,

   I'm developing a WebXR experience using three.js. You can click on a number of images to see an associated 3D model and explore it in VR. Most of the time it works fine. However, sometimes when I exit the application it crashes the browser, such that the browser disappears! Obviously, I can debug the browser in chrome via a USB connection to my PC, however, it's hard to debug the output when the browser is no longer there! I get no console errors before the crash occurs. Does anybody know of any tools that will enable me to trace the point at which the browser crashes, or just any general ideas that might help me, it's driving me crazy!!

Many thanks, Tony.