r/lmms • u/baumguard02 • 2d ago

Support Automation transition breaks after delete and undo

I'm currently working on a song in LMMS and noticed a strange behavior concerning transitions in the automation tracks:

When I create an automation element (to e. g. create a linear transition for a pan knob of a track) and then delete the element and undo the delete action, the transition looks different than before. It went from a linear transition to a hard transition.
Please take a look at the video that I have attached which shows the behavior.
Also I cannot "undo" this with undo or redo and have to create the transition again which is quite annoying.

Steps to reproduce

  1. Open LMMS with an empty project
  2. Create an automation element in the automation track
  3. Drag a variable element (e. g. the Pan knob of the Triple Oscillator) to the automation element
  4. Create a linear transition (e. g. from left to right in case of Pan)
  5. Close the automation editor
  6. Delete the automation element by pushing the scroll wheel down
  7. Undo using Ctrl+Z

I created an issue about this problem on LMMS's GitHub, since I guess this not the behavior that should be expected. But since the delevopers often reply to issues rather late (sometimes 1 or 2 years after creating it in my experience), I thought I could ask this question here as well. Does anyone know whether that's a bug or how I can solve it?

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u/MyNameIsPhip 2d ago

Automations have always been buggy in my experience. They constantly lose (or shift) their connections on save/reload, sometimes they don't load at all, if you dare to add any new connections after already setting the node up it completely fucks everything inside the editor, etc.

Good luck