Auto Test Project fails to run in arm64-v8a mode

I've attached the minimal AutoTest project, I'm trying to run, as well as logs for both arm64-v8a and armeabi-v7a targets.

For v7a the test runs to completion and for v8a, the program just hangs after launch. On the device itself, the activity shows up on screen, but nothing else happens. Screenshot attached as well.

I'm aware of all the Android 9 specific JNI errors, but since v7a seems to run fine despite them, I'm guessing they're inconsequential, and probably belong in another bug report.

As a sidenote all the Qt Quick Application templates seems to run just fine on v8a.