My clutch lever sometimes have a peculiar action. After engaging the clutch after a gearchange, I have a habit of not letting the clutch lever all the way out for a split second, despite the clutch being fully engaged already. Sometimes, maybe one out of 10 or 20 releases, the lever seems to stick in the not-fully-out position for brief period, like there is no tension on the cable, before snatching back to its resting position. I only notice it because the lever does not instantly follow my fingers.
Any ideas what it could be? I have never been able to replicate it at a standstill, everything operate smoothly and effortlessly.