If part of the rendering engine runs in their servers and not in the phone, there's no chance of keeping the end-to-end encryption. Their servers need to decryp

If part of the rendering engine runs in their servers and not in the phone, there's no chance of keeping the end-to-end encryption. Their servers need to decrypt the traffic to render it and then (hopefully!) re-encrypt it to safely deliver it to the phone. This is exactly the same as with Opera Mini and Amazon Silk.