Hello @lehinsun thanks for reaching out! Android 12 changed how accessibility shortcuts are displayed. The accessibility shortcut for 1Password turns the Accessibility setting on and off but doesn't force Autofilling. We generally do not suggest using the accessibility shortcut.
You can remove the shortcut with these steps:
1. Open and unlock 1Password.
2. Tap Settings > Autofill.
3. Tap Accessibility.
4. Tap the 1Password entry in your device's accessibility settings page.
5. Tap the 1Password shortcut off.
While you're on your device's accessibility settings page try turning accessibility for 1Password off and then on again. This will often resolve the error described.