Service discovery misses SPP services on android 8.0/8.1/++

Doing discoveryAgent->start(QBluetoothServiceDiscoveryAgent::FullDiscovery);
works as expected in android 7.1 (modulo the reversed uuid issue for which Qt ships a built-in workaround that makes it work nevertheless).
However, the SPP services are missing when doing discovery on Android 8.0/8.1 (tried on both a phone and a tablet with said versions).

One noticeable thing in the failing setup is log (seemingly android bt subsystem, not qt) printing "Changing socket protocol to RFCOMM" when trying to connect to a service, after the end of the scanning.

In the working setup there's no changing. Unsure if the initial protocol affects what services are found