Add new card button doesn't work the second time.

[GiuFio]

Summary

Add new card... doesn't work the second time.
To reproduce:

• Open PaymentMethodsActivity
• Click on Add new card...
• Click on back button
• Click again on Add new card...

stripe-issue.mp4

Code to reproduce

Code used to start the PaymentSession

   PaymentConfiguration.init(activity.applicationContext, keyProvider.getStripePublicKey())
        CustomerSession.initCustomerSession(activity.applicationContext, ephemeralKeyProvider)
        paymentSession = PaymentSession(
                activity,
                PaymentSessionConfig.Builder()
                        .setShippingMethodsRequired(false)
                        .setShippingInfoRequired(false)
                        .setBillingAddressFields(BillingAddressFields.None)
                        .build()
        ).apply {
            init(paymentSessionListener)
            presentPaymentMethodSelection()
        }

SDK version

implementation('com.stripe:stripe-android:16.3.0')

Other information

I think the cause of the problem is this distinctUntilChanged. The second time the value is filtered because it's equal to the previous one

stripe-android/stripe/src/main/java/com/stripe/android/view/PaymentMethodsAdapter.kt

Line 52 in 97c3ac3

internal val addPaymentMethodArgs = _addPaymentMethodArgs.distinctUntilChanged()

[mshafrir-stripe]

@GiuFio thanks for filing this issue. I can reproduce it. I'll prepare a fix.