In this case the witness seems to have just given up on block production mid-last year(2019-08-27), far before the Hive Fork. I know this witness is deactivated with the correct deactivation key (STM1111111111111111111111111111111114T1Anm), but nevertheless it keeps occupying a spot among the Top100 that could be used by an active witness.
I deactivate my witness sometimes the key above for maitnance purposes, but it is my belief that if a witness is deactivated for over six months, it is time to question if it's owner ever intend to return to the job. Over a year is mostly certain that the witness won't return.
I make such topics to call the attention of it's voters so they be aware that a witness they are supporting is no longer working and do whatever they want with that information. As there is not enough space in the main post for all the mentions, I'll mark them in the comments too.
EDIT:
Sorry for forgetting to naming the witness. I was referring to 
- both of the following:
- Is inactive or stale;
- Last produced block over a year ago;
- Is active but missing blocks for over a month;
If you have a spare vote...