Hi!
Today was my first eperiment with using Sphere, 180 and Wide Angle panorama shots. All of them obviously show OK in DJI Fly itself.
However, when uploaded to Google Photos, only Sphere (360 degrees) panoramas are shown correctly. All others are being treated like 360 degrees as well, resulting in obvious extreme distortions.

The reason is that for all of them GPano tags are written identically. For example this is the output for 180 degree panorama:

XMP Toolkit                     : Adobe XMP Core 5.1.0-jc003
Projection Type                 : equirectangular
Use Panorama Viewer             : True
Cropped Area Top Pixels         : 0
Cropped Area Left Pixels        : 0
Full Pano Width Pixels          : 7104
Full Pano Height Pixels         : 1375
Cropped Area Image Width Pixels : 7104
Cropped Area Image Height Pixels: 1375

For 180 degree panoramas those values should be:

Cropped Area Top Pixels         : around image height
Cropped Area Left Pixels        : half image width
Full Pano Width Pixels          : double image width
Full Pano Height Pixels         : around 3x image height
Cropped Area Image Width Pixels : image width
Cropped Area Image Height Pixels: image height