- Type: boolean
- This attribute is set to
trueif the tab is fading in or out. This typically means that the tab is in the process of appearing or disappearing.
MDN will be in maintenance mode for a brief period Wednesday June 3, from around 2:30 PM until no later than 4:00 PM Pacific (in UTC, Wednesday June 3, 9:30 PM to 11:00 PM). There should be no disruption in service.