Jordan, Georgia. I feel like if this were the cause then the bug would be a lot more common. My guess is the dialler hashes some parts of the contact to get a

Jordan, Georgia. I feel like if this were the cause then the bug would be a lot more common. My guess is the dialler hashes some parts of the contact to get a UUID, but for this contact it happens to be outside the range the dialler can look at - perhaps off-by-one, where the dialler looks for UUIDs of 1 and above and this happens to hash to 0.