What button are you pressing? is it ->| alone?
Pressing ->| following a << or >> will get to the next tick as usual on the time bar.
If you had pressed play while on a recording or live TV, it just shows your time bar position.
You can switch between 30 sec skip and 30 sec scan by doing SELECT-PLAY-SELECT-3-0-SELECT. I think there is also a setting in the menu for disabling/enabling the 30 sec scan so when you press ->| it jumps to the end instead.
Series 2 (PLS, sold)
TiVo HD 1TB (157 HD Hrs, PLS, "652")
Roamio! Oh, wait, Its Juliet!
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!