We have noticed since H383 that while the skip forward works within a specified program on PTAT, if you try to skip the commercials ,etc at the end of a program to watch the next program it says Live TV and fails to go to the next recorded program.
I've tried backing up and Fast Forwarding through the end of program barrier but that also fails. Sunday night after watching Tracker we had to exit PTAT and go to the recorded programs on PTAT and select Equalizer before we could watch Equalizer. Skip forward is working fine within each program but will not allow you to proceed to the next program on PTAT while PTAT is still active (recording).