I registered for Android P beta program and manually installed the downloaded bundle(B2N-213B-0-00WW-B05-update.zip) using adb. It's disheartening to see android P is not installed instead installation rolls back to oreo.
I recently brought nokia 7 plus as this phone is one to get android P beta. Really disappointed to see this issue. Nokia should step up and try resolving these issue ASAP else many users who started to engage with nokia might ditch it for it's poor software quality.