Unresponsive login screen

When I updated to 1Password 8, it prompted me to sign in to an existing account found on my machine. My email and secret key were pre-populated, and I just had to enter my master password. The UI on that page is so slow that when I typed my password and hit "enter", it hadn't even yet registered that I had input text into the password field, and the "sign in" button hadn't yet turned blue. After what I'd guess was about 300ms, the button turned blue, and I could hit enter.

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1Password Version: 8 early access
Extension Version: N/A
OS Version: macOS 12.0 Beta (21A5294g)