Wierd Behavior on 30 sec jumps

In the last week I've noticed an extremely weird thing when doing 30 second jumps (not Skipmode) through commercials. As the video frames scan by during the jump; frames from the show pop up. However, if I stop; I'm not quite out of the commercial block yet. It seems like frames from further on in the recording are intermittently popping up.

I definitely saw this on HGTV on my Roamio Pro today and I think I've seen the same behavior on CW on my Bolt. Anybody else noticing this?