Android Debug on Pixel 2 not working

Hello,

I'm working on a Qt app for Android. Debugging it in its current state on a Nexus 9 with Android 7.1 works fine. Debugging a Qt example on the Pixel 2 x86 simulator also works.

Debugging on the real device (Pixel 2 Android 8.0 Security Patch November 2017) does not work. The debugger seems to come up on the device but then the log is spammed with "Qt JAVA: DEBUGGER: Waiting for debug socket connect" until a timeout exception occurs. Very rarely (~1%) the debug start succeeds but
mainly it fails like explained. The last thing I can see in the log output is "Debug socket accepted", then the log is just spammed with the above mentioned message. I suspect the debug start gets stuck somewhere between lines 680-686 in QtActivityDelegate.java.

Any suggestions what I could do? Already tried turning off mixed debugging and other devices/emulators work as well. Seems to be limited to this particular device.

Regards