Edit: $50 reward will be sent via PayPal to whoever gets the issue fixed first.
I have a simple test project using a slightly modified version of the default VR scene ( select jumps to new scene in box.js ), where the new scene is a duplicate of the VR scene. When jumping back to a previously loaded scene, an error occurs.
You can test and see this bug in a non-VR environment 
Here’s the link to the project showing the issue…
https://playcanvas.com/project/541841/overview/vr-project-scene-swapping-issues
If you hover over the box for a few seconds, the next scene loads. If you then hover over that box to load the original, you’ll get this error…
[playcanvas-stable.dbg.js:606]: Unable to get property ‘selectorcamera:select’ of undefined or null reference
TypeError: Unable to get property ‘selectorcamera:select’ of undefined or null reference
at pc.events.fire (https://code.playcanvas.com/playcanvas-stable.dbg.js:606:19)
at SelectorCamera.prototype.update (https://launch.playcanvas.com/api/assets/files/scripts/selector-camera.js?id=11517791:54:21)
at _scriptMethod (https://code.playcanvas.com/playcanvas-stable.dbg.js:23262:7)
at _onUpdate (https://code.playcanvas.com/playcanvas-stable.dbg.js:23299:9)
at _callComponentMethod (https://code.playcanvas.com/playcanvas-stable.dbg.js:23526:7)
at _onUpdate (https://code.playcanvas.com/playcanvas-stable.dbg.js:23536:5)
at pc.events.fire (https://code.playcanvas.com/playcanvas-stable.dbg.js:608:5)
at update (https://code.playcanvas.com/playcanvas-stable.dbg.js:21310:7)
at Application.prototype.update (https://code.playcanvas.com/playcanvas-stable.dbg.js:20861:5)
at Anonymous function (https://code.playcanvas.com/playcanvas-stable.dbg.js:21210:7)
And here’s an image show the debug trace…
And here’s a link to a project where I’m testing some fixes ( cleaning up on the destroy event )
https://playcanvas.com/project/541842/overview/vr-project-scene-swapping-2
If you can help get this resolved, we can get the changes put back into the original default VR project so that it’s fixed for the next person.
There are no issues with jumping between different scenes ( tested with several in a row ), it’s jumping back to a previously loaded one that is causing the issue.
Mal
