Attack Compensation fails to update during manual Sound Slot selection (repro included)

Cubase
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1

Hi, I found another bug:

When playback is active, manually switching between Sound Slots (via the Expression Map window or Key Editor left zone) doesn’t update the Attack Comp. The engine seems stuck using the Default Sound Slot’s Attack Comp. for all auditioned notes, rather than switching to the selected articulation’s compensation value.

This issue makes configuring complex Expression Maps’ Attack Comp. way harder, as users have to set articulations in the Key Editor just to test the timing, rather than simply auditioning them on the fly.

Steps to reproduce:

  1. Create an empty project.

  2. Add an instrument track with an orchestral library.

  3. Create an Expression Map and assign different Attack Compensation values to each Sound Slot.

  4. Program a series of 8th notes in the Key Editor, set a loop, and start playback.

  5. While playback is active, manually select different Sound Slots in the Expression Map Setup window or the Key Editor’s Inspector (left zone).

Result: The played notes only use the Default Sound Slot’s Attack Compensation, regardless of which Sound Slot is manually selected.

System: Windows 11
3rd party plug-in: SINE Player
Cubase version: Cubase 15.0.21 Pro

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