Forward Skip Failure on TSR Play

Black Hole

May contain traces of nut
Reporting an observation:

Watching Yesterday on time-shift, skip back (set to 15 seconds) worked, left/right timeline worked, but forward skip (2 mins) would not work at all - every time I tried it the playback returned to live.

When I switched channel to ITV1, everything was fine again.

Hypothesis: something about the Yesterday data caused the forward skip to miscalculate.