MidiClips in PatternEditor disappear after changing time signature
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- Dominant language
- C++
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Description
System Information
Arch Linux, GNOME 47, Wayland
LMMS Version(s)
1.2.2 and master
Most Recent Working Version
No response
Bug Summary
Changing the time signature can cause midi clips within patterns to disappear. They still play, but you cannot edit them or interact with them in any way.
Expected Behaviour
The midi clips should not disappear when the time signature changes.
Steps To Reproduce
- Open LMMS
- Press the new pattern button
- Change the time signature while in the 2nd pattern
- Look at first pattern
- Look at the second pattern again
- The clips in the second pattern have disappeared
Logs
Screenshots / Minimum Reproducible Project
Please search the issue tracker for existing bug reports before submitting your own.
- I have searched all existing issues and confirmed that this is not a duplicate.
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the issue in LMMS using the listed steps: create a new pattern, change the time signature while in the second pattern, and inspect both patterns. Trace the PatternEditor behavior when the time signature changes. Done means MIDI clips remain visible and can still be edited and interacted with after the change.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100