I want to report a highly reproducible and critical bug regarding the Kontrol S MK3 and Cubase integration on the latest v2.1.3 update. The level meters incorrectly duplicate Page 1's activity when banking to Page 2 and beyond.
Environment:
- OS: macOS 26.5.1
- DAW: Cubase pro 15.0.30
- Hardware: Kontrol S MK3 (Firmware v2.1.3)
- Software: NI Hardware Connection Service (v2.1.3)
Steps to Reproduce: To strictly rule out any multi-out instrument routing issues, I tested this using only pure audio tracks.
- Create 24 standard Audio Tracks in a blank Cubase project.
- Place an audio file ONLY on Track 1 and hit play. (Only Track 1 is outputting audio).
- Switch pages (banks) on the Kontrol S MK3 and observe the meters on the displays.
Results:
- Page 1: The leftmost slot (Track 1) meter shows activity. (Correct behavior)
- Page 2: The leftmost slot (Track 9) meter shows activity. (Bug: Track 9 is silent, but the screen incorrectly copies Track 1's meter).
- Page 3: The leftmost slot (Track 17) meter shows activity. (Bug: Incorrectly copies Track 1's meter).
Important Notes:
- Fader volume control and other MIDI operations work perfectly across all pages. The bug exclusively affects the visual meter feedback on the displays.
- If both Track 1 and Track 9 are outputting audio simultaneously, the meter on the hardware screen flickers/glitches rapidly, clearly indicating a data conflict where both track levels are being drawn on the same display slot.
- It seems the MIDI Remote script or HCS is failing to calculate the page/array offset for the meter drawing API.
- This issue did not exist in previous versions. It is a new bug introduced in v2.1.3.
This bug severely impacts mixing workflows on projects with more than 8 tracks. Could the NI development team please investigate and patch this array offset issue as soon as possible?
Thank you.
