Post Message - onMessageChannelReady is not getting called

[onkar-rentomojo]

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Describe the bug

1. CustomTabsCallback onMessageChannelReady is not getting called even if the validation result is true.
2. Why do we have !mValidated condition in onNavigationEvent if onRelationshipValidationResult gets triggered only when mSession.requestPostMessageChannel is called from the function.

            @Override
            public void onRelationshipValidationResult(int relation, @NonNull Uri requestedOrigin,
                boolean result, @Nullable Bundle extras) {
                // If this fails:
                // - Have you called warmup?
                // - Have you set up Digital Asset Links correctly?
                // - Double check what browser you're using.
                Log.d(TAG, "==========Relationship result============: " + result);
                mValidated = result;
            }

            // Listens for navigation, requests the postMessage channel when one completes.
            @Override
            public void onNavigationEvent(int navigationEvent, @Nullable Bundle extras) {
                if (navigationEvent != NAVIGATION_FINISHED) {
                    return;
                }

                if (!mValidated) {
                    Log.d(TAG, "Not starting PostMessage as validation didn't succeed.");
                }

                // If this fails:
                // - Have you included PostMessageService in your AndroidManifest.xml?
                boolean result = mSession.requestPostMessageChannel(SOURCE_ORIGIN, TARGET_ORIGIN,
                    new Bundle());
                Log.d(TAG, "Requested Post Message Channel: " + result);

            }

           @Override
            public void onMessageChannelReady(@Nullable Bundle extras) {
                Log.d(TAG, "Message channel ready.");

                int result = mSession.postMessage("First message", null);
                Log.d(TAG, "postMessage returned: " + result);
            }

[enex]

@onkar-rentomojo have you found a solution? I am experiencing the same issue