I recently set the B output of my DCC-EX command station to MAIN_AUTIO, which is their automatic reversing loop functionality. This functionality is relatively new and isn't mentioned much in their documentation.
Afterwards I configured this, going to the Power screen in the Engine Driver app causes the App to either crash or disconnect from the DCC-EX system. This happens on both of my phones with Engine Driver installed.
Luckily, the Action Bar power button seems to work fine and turns the track power on, so that is a current workaround.
Engine Driver version: v2.39.195
Steps to reproduce:
-include SET_TRACK(B,MAIN_AUTO) in the myAutomation.h file when configuring a DCC-EX command station, such as:
AUTOSTART
SET_TRACK(A,MAIN)
SET_TRACK(B,MAIN_AUTO)
DONE
-connect to the DCC-ex command station on the Engine Driver app
-using the 3 dot menu on the action bar, click Power to go to the Power screen
-The screen will briefly load with the Power button before the app either crashes or kicks me back to the throttle screen (but disconnects me from the DCC-EX system)