[bug][reproducible]Session can't be destroyed or re-enabled on Android after querying availability

[nilsk123]

Hello,

We have further debugged and found the root cause of these two bugs I logged previously:

https://github.com/Unity-Technologies/arfoundation-samples/issues/411 https://github.com/Unity-Technologies/arfoundation-samples/issues/412

There is a bug in the arcore package which crashes the device if you have queried arsession availability and then try to either destroy the session or enable it twice

This regression was introduced in arcore xr plugin 3.1.0-preview.4, preview.2 works fine

This is perfectly reproducible across Android and Unity versions, we have attached a minimal reproduction case:

• Start samplescene
• Click one of the buttons to either query availability and destroy the session or query availibity and enable the session twice
• Observe crash

Ar Foundation Ar Session Bug.zip EnableSessionTwice.log DestroySession.log

[DavidMohrhardt]

Thanks for bisecting this issue. I am still looking into the cause but this is a huge help!

[DavidMohrhardt]

We have a fix out that will be in the next release. I can't say when that will be exactly but it should be fixed in the next preview version.

[saurabhburadkar]

preloadedAssets issue still there in 4.1.13 ar foundation version unity 2020.3.30f1