LMMS / LMMS/lmms

Replacing an instrument with one from favorites resets the mixer channel

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#2,564 3 comments 0 reactions 0 assignees View on GitHub

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bug
Dominant language
C++
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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Description

To reproduce:

  1. Have a instrument set to use mixer channel 3
  2. Drag any other instrument from favorites on top of it
  3. Open new instrument and see that mixer channel is now 0 (or very rarely 1)

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the replacement described in the issue: set an instrument to mixer channel 3, replace it with an instrument from favorites, and inspect the resulting channel. Trace the instrument replacement path and mixer-channel state, then verify that replacing the instrument preserves channel 3 and add regression coverage if the project’s existing tests support this behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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