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1×1 Small Hinge symmetrical, unable to tell direction
Solved
The new 1×1 Small Hinge is textured and modeled exactly symmetrical, placing it is a matter of trial and error for every single hinge to tell which way it will deflect when setting the velocity in either direction.
The 1×1 Large Hinge and 3×3 Small Hinge at least have visible differences on the hub, having a feature in the negative side, but for the 1×1 Small Hinge, there is no such marker.
Files:
hinges-noupdown...
I have the same bug 
Beautifully presented. I also checked myself and there's no easy way I could find directions.
This is a huge mistake for me. I use direction indicators very frequently on Digi hinges.
Hi guys,
That is a nice catch, the issue has been reported.
Thank you very much for your feedback and making the game better.
Have a nice day :-)
Hinges have a small marking with emissive lighting marking(Red circle) which differentiates the negative side from the positive. (: