[malte]

Maybe it is the python code that launches system/bin/am. I compared the code of our three Addons and they are all a bit different.

If I grabbed the correct parts of your addons it looks like this:

IAGL (Non-Android)

Code:

subprocess.call(self.external_launch_command,shell=True)

IAGL (Android):

Code:

subprocess.call(self.external_launch_command,shell=True,executable='/system/bin/sh')

RCB

Code:

subprocess.Popen(cmd, shell=True)

AEL

Code:

subprocess.call(command, stdout = f, stderr = subprocess.STDOUT, close_fds = True)

The difference seems to be the "executable='/system/bin/sh'" part in IAGLs launch code. Maybe thats the trick. But as Wintermute I can't test on Android 8, so I can't tell if this will work.