Some SYN2 Factory Presets have Oscilator switches (the waveform icon in the new Edit Panel) turned off. Why? So when we use the hardware panel interface (the Syntronik 1 edit panel), Osc 2 can be easily switched on and off. (It also works from the new Syntronik 2 Edit Panel).
I stumbled onto this feature when looking at SYN2 Presets for the VCF3 Instrument, specifically Benchley Park, Work It, and Wind of the Dover Cliffs.
One application I can use this for is for a global MIDI switch (manual or automated) to turn an Osc 2 Wave Set of my choice on and off from the hardware style edit panel. We can also do this for Osc 3 and 4 but only from the new Edit Panel. MIDI control of preset variations without having to load in a different preset!

Note: Even if this was unintentional, I hope IK doesn't remove this feature. Having it doesn't affect existing factory presets and it adds a handy feature for users when tweaking or creating presets.