I can't say for sure, but to see if they are, you first have to PAUSE playback and then hit the FF button. Like you, we rarely used them.
The 4X FF being gone is odd. A deal-breaker ? That's laughable.
I ,Just like you never use the slow-motion function, and the 4x, well cant say anyone complained in our house since its been gone ,going on about 7 months.
From this U213 software that still has issues on my H2s are.
Blank screen no audio, or Picture and no Audio from exiting apps.
Still has Guide issues when expanding or collapsing RSNs, Music channels and Internationals.
You lose the cursor... and the ability to select a channel.
Still grabs Tuners you are watching live tv on to record ,even if 2 are still available.
Still no PTA sharing.
Those are the only ones that bug me.
Samsung Galaxy S6 Active