The dock reports no changes back, so the page now hands each new value to its slider row, which otherwise returned the handle to the value the page opened with once the move settled.
The Users page shows its accounts in a list card, as Wi-Fi does, the one logged in first. Each row keeps the picture, the names and whether it is logged in, and ends in an info button that opens the account's type, the way to a new password and deleting it.
Each test now runs in dbus-run-session, and a fake that cannot own its
service's name fails the test, so the tests never reach the session's
compositor or services and change the user's settings.