SpaceX Has Another Second Stage Issue With Falcon 9

Photo: from SpaceX livestream
Third Stage-2 Problem In The Last Six Months
SpaceX seems to have experienced an issue with the second stage of the Falcon 9 used for the recent Starlink 11-4 launch. After lifting off on February 1st with no problems, Falcon 9 delivered its payload of Starlink satellites into their intended orbit after a brief circularization burn of the second stage, as planned. What apparently has not gone to plan is the de-orbit burn of the second stage, as it is still in orbit five days after the active part of the mission was completed.
The company has not commented on the matter.