Rewind, FF, etc. fail and have to power off/on to work.

I find that I run into situations, watching live TV, where the pause, REW, FF, etc. stop working.  The only way to clear it up is to turn it off and back on (not an unplug reboot, just power off/on), but by then, what I was watching on live TV is no longer queued, so I still can't rewind etc to get back to what I missed.  Anyone else see this?