Bitcoin Wallet automatically creates unencrypted backups?

[BusyBeaverHP]

I've been using Bitcoin Wallet for Android for two months since you guys implemented a spending PIN. Things are going great until I discovered that the app automatically generated an unencrypted backup of my wallet!

I've been walking around with an unencrypted copy of my wallet for two whole months!

I have not been notified by the app at any point in usage, that it would generated an unencrypted backup. It was only when I accessed "RESTORE WALLET" that I became aware of the vulnerability.

1. Is there an option for me to turn off automatic wallet backup, especially upon creating a new wallet?
2. Should there be a future change that does not automatically backup without encryption?

Thanks