Manual:$wgShowLogoutConfirmation

Miscellaneous settings: $wgShowLogoutConfirmation
Whether to display a confirmation screen during user log out.
Introduced in version:1.42.0 (Gerrit change 1011369; git #5c785086)
Removed in version:Still in use
Allowed values:(boolean)
Default value:false
Warning Warning: This is a temporary feature flag.