We have not made any major or minor changes to the build system. I recommend trying to build and install a blank project on your Android device to validate whether it is your device or project. Also I recommend using the Debug tab to evaluate your application as it runs on your device.
Thank you, Elroy,
I have just figured out the problem. I was using Cordova 5.11 version which is not supported anymore, since last 1st June, when my problem began. Just did the change to 5.41 and went back to normality.