Message Filtering Extension

I have an app with Message Filtering Extension enabled and I have been experiencing unusual behaviour.

When I send messages from local number to local number, the filtering is done correctly, but when I send messages from certain international number to my local number the messages are not filtered. I couldn't find any errors in Console.

I see that the normalisation is correct, is there any specifications for SMS from certain countries? Or a reason why Message Filtering is not activated when a SMS is received?

Please file a bug report with sysdiagnose so we can investigate further.

Message Filtering Extension
 
 
Q