Board-buttons not displayed to observer


I was hoping to display Power Up board-button for all the users which are signed in. Button is displayed only for admins and members, but not for observers. As documentated here there are different options for condition when showing board-buttons and I have put condition: ‘signedIn’. It doesn’t matter if this user is a workspace member or guest, it doesn’t work anyway.

Is there any limitation for observers to see board button or I’m doing something wrong?

Best regards,