Any example of inconsistent behaviour in an Android Mobile app.

This is from Optus a Telco supplier.

You have an amount to pay value and a click to pay button.

The next screen should carry over the amount to pay value but instead has a value from  a payment made months ago.

So after manually changing the value and submitting CC details the payment fails anyway.

Just an example of an application that works some of the time but hasn't had the UI and backend inconsistencies fixed before being pushed to the hapless users.