Moving about in recordings

I can’t use the 30sec boxes to move to a new location when viewing recordings on my sony tv. It relocates the sound and cc but leaves the video where it was. This has been going on for about one week. I moved the roku to a Panasonic tv and works ok. Why won’t the sony work? I’m using the legacy tablo with roku. The tv model is KD-43x720E.

I sure hate lose this feature.