When disc component's transform scale is not 1 the thickness scales based on the camera.
Please see gifs attached the two discs that are scaling based on the game view size have a transform scale of 20 or a child of a transform who's scale is 20. The one that's working has a scale of 1.
Reporting a bug? please specify Unity version:
2019.3.9f1
Reporting a bug? please specify Shapes version:
2.2.0
Reporting a bug? please specify Render Pipeline:
this has now been fixed in 2.3.0