When you watch a recording from a live channel in MOL2 you can configure a "Jump" setting, like 10s/30s/60s etc... but when you press the FFWD button it starts to increase the play speed to 2x/4x/8/16x.
The same FFWD does jump the configured time when viewing cloud/timeshift.
Jump functionality should be the same when watching a recording or otherwise an alternative button should be configured (and documented) to skip/jump the configured amount of seconds.