Surge / Surge-XT attack resolution from MIDI controller Nektar impact LX49+

[huornlmj]

Bug Description:
Attack resolution is only 1 bit when MIDI control is assigned to controller CC#38

Surge XT Version
1.2.2.832c875

• Version:
• Plugin Type: [VST3]
• Bitness: [64-bit]

Reproduction Steps:
Steps to reproduce the behavior:

1. Right click on the Attack controller in the Filter EG section and learn from MIDI controller.
2. On Nektar Impact LX49+, use the first slider (called attack)

Expected Behavior:
A expect the slider to travel from bottom to top in correspondence to the controller. It does not. It only moves 1 bit, from 0 to 1. I have confirmed the controller itself is fine as my DAW (Renoise) can see full 128 bit resolution coming from the same physical control.

[mkruselj]

MIDI CC #38 is supposed to be reserved and not available to MIDI learn, as evident by the MIDI learn submenu:

That it even does pass MIDI learn procedure is a bug. Thanks for the report!