Metronome breaks all audio on songs where a track is assigned to MIDI channel 16

[reifocS]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Given a Guitar Pro file with 6+ instrument tracks, the audio breaks (goes silent) when the metronome is enabled

Expected Behavior

Enabling the metronome should not break the audio

Steps To Reproduce

1. Go to the playground and load a .gp file with 6+ instruments and start playback
2. Enable metronome with the volume slider in settings
3. Audio gets corrupted and goes completely silent at some point.

I tried with Mrs. Robinson tab from gprotab

Link to jsFiddle, CodePen, Project

No response

Version and Environment

alphaTab 1.8.1
  commit: 8a2102fe7ee7dcf4b50c3a4198fbb8c0d5c0fda3
  build date: 2026-02-01T19:53:46.853Z
  High DPI: 1
  Platform: Browser
  WebPack: false
  Vite: false

Platform

Web

Anything else?

No response