Why the inconsistency in Chrome?

Hello Symantec,

Why is does the vault behave inconstantly?  What I mean is if I navigate to a site and am not prompted to open the vault, clicking in the username or password field often gets the prompt to open my Vault.  However, sometimes I get a drop-down as shown in this screenshot:

But then sometimes I get a link which prompts to open the vault login screen like this.

Why?  There appears not to be any rhyme or reason behind the different Open Vault prompts so I never know which one I will get.

Can Symantec please explain why I get this inconsistency?

Thank you.