On B4A 6.0 plus my two devices with Android 6 and 5.1 I'm having problems with the logs which I can't reproduce. Even "clean project" and restart adb often doesn't help: In over 80% (fresh started pc/B4a and Bridge) the logs don't work. Sometimes the Bridge just closes (maybe crashes).
It's not a connection problem (the bridge connects at once - B4A, bridge and the logs say "connected"). Any ideas how to check what the Problem could be?
The same problem happened to me for the first time today (B4A 6.5 / B4A bridge 2.3). I solved it by switching to Release mode and back to Debug mode immediately.