Error trying to use some player buttons.

Expected behavior

The user expects to use at will the buttons characteristic of the application such as, Next, Previous, pause, repeat song among others.

Actual behavior

The user cannot use at will the buttons that are characteristic of the application such as, Next, Previous, pause, repeat song among others. Because at certain times when you are using these buttons, the application does not recognize the order when touching the touch screen of the device.

How to reproduce

• Download the application.
• Install.
• Start and play a melody of your liking.
• Use the player buttons continuously.
• In doing so, we notice how sometimes, despite touching the button, the application does not follow the order.

• Browser: Echo - Music Player V 1.0
• Operating system: Android V 5.1.1

Recording Of The Bug