Thanks @Bhack  and @lgusm!
Strange that ALL turorials use the unpack code snippet I tried. A lot of people should be seeing the same issue.
But now I’m getting:
{'AP': 0.8345967,
 'AP50': 0.9843931,
 'AP75': 0.9154825,
 'AP_/blue-landmat': 0.8039687,
 'AP_/class': -1.0,
 'AP_/red-landmat': 0.8652246,
 'APl': 0.88267785,
 'APm': 0.8323183,
 'APs': 0.41428608,
 'ARl': 0.9151628,
 'ARm': 0.88222224,
 'ARmax1': 0.8433333,
 'ARmax10': 0.8713492,
 'ARmax100': 0.8763492,
 'ARs': 0.5214286}