We noticed some unclean behaviour when working with rigid bodies, which leads to bad simulation results. When scrubbing through the timeline the last simulation state is being used for later continuation of the "main" simulation, which doesn't always work as shown in the following example.
Steps to reproduce based on the attached blend file:
- Start simulation (Alt+a)
- Stop simulation (Alt+a)
- Jump to a future point in the timeline and simulate a bit further and stop again
- Jump back to start range and continue the already cached simulation (or press Bake)
Resulting simulation with motion path and frame numbers:
Tested on Windows 7 x64 with the official buildbot version.