Hello,
On newest version of macOS Big Sur (11.0.1) I experienced annoying "behavior" (or may be a bug?). So, when I attach my MacBook Pro to an external display, it will show floating "Passwords..." button and it's unremovable even though I switch from one app to another. I need to restart my MacBook Pro in order to get rid this button from the screen.
I appreciate any response to this issue. Thank you. :)
MacBook Pro with Touch Bar
I don't know why this is happening, so I can't offer you a full answer. However, I have experienced the same problem and when closing down the "Keychain (Mobile Mouse Server)" process via the Activity Monitor it does disappear.
In my case, it appears this is related to the 'Mobile Mouse Server' trying to confirm a privacy request for controlling my computer. You may find your issue relates to a different app, but it will still be a Keychain process you need to stop.
You could also check what apps you have allowed to control your computer under System Preferences → Security & Privacy → Privacy (tab) → Accessibility
Allowing 'Mobile Mouse Server' control of my computer has (for now) stopped the "Passwords..." button from appearing anymore.
I don't know why this is happening, so I can't offer you a full answer. However, I have experienced the same problem and when closing down the "Keychain (Mobile Mouse Server)" process via the Activity Monitor it does disappear.
In my case, it appears this is related to the 'Mobile Mouse Server' trying to confirm a privacy request for controlling my computer. You may find your issue relates to a different app, but it will still be a Keychain process you need to stop.
You could also check what apps you have allowed to control your computer under System Preferences → Security & Privacy → Privacy (tab) → Accessibility
Allowing 'Mobile Mouse Server' control of my computer has (for now) stopped the "Passwords..." button from appearing anymore.
Thank you @marknotton for posting this solution. I just got a new Mini M1 and have been going crazy with this unremovable "passwords..." button that appears after waking from sleep. Have tried a few times with Apple support but got nowhere. Have been thinking to return the Mini because this is so frustrating and Apple was not helpful. But now I see that it's a Mobile Mouse issue. I hope the developer will fix this!
Unremovable "Passwords..." floating button on Big Sur
