[LAU] Ardour 2.8.4 ?

I installed Ardour 2.8.4. (6077) on a new Arch system today and it's showing some strange things. * On newly created sessions, the mute buttons affect the meters but not the signal. * When following Jack transport: - Play for a few seconds - Use the 'rewind to zero' on e.g. qjackctl - Ardour goes to zero, and restarts playing, but the position counters remain at the place wher the 'rewind' was done, until either - position goes beyond this place - or you stop. Anyone seeing similar things ? I just want to find out if this only affects the Arch binary, or all systems. Ciao, -- FA O tu, che porte, correndo si ? E guerra e morte !