(Four) Shift4 has a dark pool short interest above 80%.. has anyone seen one this high before?

I know the company has a lot of outstanding debt but these numbers are wild to me.

|Off-Exchange Short Volume|486,336 shares - source: FINRA (inc. Dark Pool volume)|
|:-|:-|
|Off-Exchange Short Volume Ratio|80.53 % - source: FINRA (inc. Dark Pool volume)|

Thats higher than GME in its prime from what I can find. Does anyone recall a stock this size as with that high of a dark pool volume?