I just upgraded to kdenlive 0.8.1 rev 5808. Now, when I add the volume (keyframeable) effect, only the volume slider is visible and it doesn't work; it's frozen. No other options are displayed. The volume effect is listed in the effects stack but none of the options are visible, I can't really change the volume. Also, the clip in the timeline shows the "volume" label in the corner but no keyframable lines are visible. There is no way to change the volume on a clip. The little "Add keyframes" clock is missing. How do I fix this? My previous revision (rev. 5793) worked fine.