Both my iPhone and iPad have the same version installed (7.7.7), however, on the iPad, when my device restarts, I am able to use Password AutoFill without using my Master Password, whilst on my iPhone, I must first enter my Master Password.
If I run the 1P app on either OS, they require my Master Password. It's purely on the iPad that it is bypassing this initial unlock request.
Neither device has the Settings -> Advanced -> Security -> Auto Fill password requirement enabled.
Feels like a bug.
1Password Version: 7.7.7
Extension Version: Not Provided
OS Version: Not Provided