Clicks move playhead instead of selecting

[amindfv at mailbox.org]

I've seemingly entered a strange mode in Kdenlive where when I try to select a clip it instead moves the playhead to wherever I just clicked.

This setting appears to survive restart of Kdenlive.

Have I accidentally enabled some strange per-project setting? And most importantly, how do I turn it off?! I'd like the playhead to move only when I click the position ruler.

Thanks,
Tom