POOL/IMPORT MEDIUM/OPTIONS/PREVIEW: controls graphically not working?

Can anybody confirm that the controls in the preview-function in POOL/IMPORT MEDIUM/OPTIONS actually graphically work?

On my system on Nuendo 8 they graphically don’t work as they are meant to function:
The audio files actually do sound but the volume slider won’t slide and the transport control-buttons can be pressed, but not de-pressed (actually, I’m the one who’s getting de-pressed when using N8…)

Not really important, though not “advanced” at all.

Thanks, Niek.

UPDATE:
The graphical interface actually does update, after I touched the transport-position-cursor in order to move the “playhead” while previewing.