You'd think that setting Slide Tracking to disabled in Dashboard would prevent CC74 from being sent, but it doesn't. Each touch will still send some CC74 reset message. Same with Glide Tracking, and on the Lightpad also with Pressure Tracking (last time I checked, setting Pressure tracking for a Seaboard Block to disabled was the only tracking option that did the right thing - entirely stopped sending aftertouch messages).
I reported these bugs to support some month ago, they all were confirmed (in case of Lightpad as already known) and planned to be addressed "in a future update".
This isn't only annoying with MIDI learn, but also in everyday use. For example the drum grid, (both the separate progam and the drum grid in Note Grid) is sending aftertouch messages with each touch, which in EzDrummer will mute all cymbal sounds. No way to prevent it as of now. I "misuse" the Control Grid for drums because of this.
The reset message spam is severely hampering usage of Blocks to control some instruments, for example GM instrument patches will set their cutoff frequency according to the incoming CC74 reset message with the first note you play. Forget about controlling CC74 with a slider while playing with a Block, even though you told it to not track slide. Also, I scripted a neat pitchbend "wheel" for Lightpad, because I thought I could play Single Channel instruments with Seaboard Block and control pitchbend (for all notes, obviously), like with an ordinary controller but squishy. But no, pitchbend reset is sent with each touch, even when Piano Mode is enabled and Glide Tracking disabled.
Hopefully it will be addressed soon.
Just for clarity, by this:
But no, pitchbend reset is sent with each touch, even when Piano Mode is enabled and Glide Tracking disabled.
I meant … with each touch on the Seaboard Block.
Albeit my code is pretty crude and would make someone who knows what he's doing cringe - I don't know better-, the DIY virtual pitch wheel itself works a charm, eg as global pitch wheel in MPE mode ;). Just not for what I intended to use it for.