Steps to reproduce:
1. Download project and open "testTorque" scene
2. Open testTorque.cs and comment out line 15
3. Press play button
4. Circle turns to slow
5. With line 15 not commented circle turn at correct speed

When inertia = 1 and torque = 1
angularAcceleratio=torque/inertia angularAcceleration=1(rad/s)

Calculating angle after 1 second.
angle=(angularAccelerationtime^2)/2 angle=0.5(rad)
Converting to degrees 0.5/PI180=28.6

After 1 second circles should have turned 28,6 degrees.

Reproduced with: 5.6.0b3, 5.5.0p4, 5.4.4f1, 5.3.7p3