Exact steps for others to reproduce the error
- make hair particles with the dupliobject
- rotate dupliobject and set flag Rotation in particle system, it is under Dupli Object item. This flag is need for clarity.
- make one opengl view(material or solid ... no difference) and one BI preview.
- rotate BI preview, you'll see twitch in opengl viewport.
I saw this bug only for hair particles. Emitter is working properly. My test file is attached.
Alexander Romanov (Blend4Web Team)