…when pressing play, this happens on ReWire mode, but not in the stand-alone version…
(guess this is caused by the Preroll, cubase sends to renoise - happens in slave mode, but haven’t tested in master mode…)
Yes, Cubase and some other ReWire masters do “preroll” all transport position changes. Nothing we can do here, sorry, thats up to the master to handle.
But probably theres an option in Cubase somewhere where you can control this behavior?
yeah, the preroll settings in cubase, don’t affect the ReWire preroll being sent.
…I guess the only situation where this might get to the way of composing, is when someone is making a beat, that is spliced to many patterns - so perhaps this can also be easily overcome by learning to use longer patterns…
Old FT-beard speaking here 
Gotta learn to adjust :]