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Multi-User Action keeps moving object after deleting all keyframes until reloading file
Confirmed, NormalPublic

Description

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.92

Blender Version
Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: rB02948a2cab44
Worked: (newest version of Blender that worked as expected)

Short description of error
Deleting keys from action with several users doesn't update correctly.
Actions without any keyframes keep changing the object until you revert the file.

Exact steps for others to reproduce the error

  1. Add two keyframes to the default cube. (Scale it up and move it to the side)
  2. ALT+D to create a linked copy.
  3. On the linked copy, go to the dopesheet (e.g. action editor)
  4. Delete the keys. Because the action has two users, the keys should be deleted for all users.
  5. Play the animation. You'll see the original copy still moves according to the original keys.

Thank you for taking a look at this! :)
Seems like a bug to me.

Revisions and Commits

Event Timeline

Manuel (af_manuel) renamed this task from Deleting keys from action with several users doesn't update correctly to Multi-User Action keeps moving object after deleting all keyframes until reloading file.May 12 2021, 10:00 AM

Not sure I understand the problem. Can share the .blend file and a short video describing the problem??

An action data block with zero keyframes still changes the scene. After deleting all keys from a multi user action, the non-selected users will still move, even though when you select them you can see that their actions are entirely empty.
Reloading the file makes this behavior stop. Follow the steps written in the description and you should see.
Thank you :)

Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Confirmed.May 12 2021, 12:53 PM

Can confirm.

There were some missing depsgraph updates. Should be fixed now.