Why doesn’t 1password work the same every time?

I don’t like having to unlock 1password every time I need to enter a password sometimes I get a box next to the password field that when pressed it autofills the password without unlocking 1password which I like however more often than not the box is not there. What causes this? Attached is a screenshot
Thanks

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1Password Version: 8.9.7
Extension Version: Not Provided
OS Version: iPadOS 15.7.1
Browser:_ Safari
Referrer: forum-search:https://1password.community/search?Search=Safari%20doesn%E2%80%99t%20ask%20for%20password.