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I accidentally deleted a Color Ramp node that I was working all my colors on, and now when I cmd+z it doesn't do anything.

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  • $\begingroup$ Undoing is done with Ctrl+Z menu. You can try access undo history Ctrl+Alt+Z and proceed from there (at least you'll know whether or not undoing is possible). $\endgroup$
    – Mr Zak
    Jul 28, 2016 at 11:08
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    $\begingroup$ Seems like undo is broken in the node editor completely. This should be reported as a bug. $\endgroup$
    – Greg Zaal
    Jul 28, 2016 at 11:52
  • $\begingroup$ I have the same issue. Yesterday Undo worked fine in node editor, but today it doesn't. The undo history shows all changes, but nothing happens when I select something. :( $\endgroup$
    – Niclas
    Jan 4, 2017 at 19:05
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    $\begingroup$ I must admit that I am surprised to see the same behavior even in 2023 in the current Blender versions. I have to assume that this is indeed a bug in Blender. $\endgroup$
    – quellenform ♦
    Jan 5 at 9:12
  • $\begingroup$ Yes it is a known issue developer.blender.org/T71895 $\endgroup$
    – Harry McKenzie
    Jan 5 at 10:19

4 Answers 4

Reset to default
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I noticed that undo in the geometry node editor window only works when my 3D view window is in object mode, more specifically, not in edit mode.

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  • $\begingroup$ I found this problem on Google, and this was exactly my problem, thank you so much! $\endgroup$
    – Brandon Yarbrough
    Feb 25 at 3:22
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The above solution should work, but it seems like a bug in the Undo history for the nodes editor.

Solution

  1. Switch to the 3d view
  2. Make a change, press CTRL+Z (it should work)
  3. Go back to the node editor, edit something, and CTRL+Z works again. Heureka!
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  1. Check User Preferences➜Editing➜ Undo➜ Step is not set to 0.

  2. Try undo from dropdown menu(assume tho you have tried this alraedy)

  3. Try restoring default key layout.

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Hit Alt+Shift. You probably switched to a QWERTZ keyboard configuration (for example DE) by accident, and are too far in the 3d zone to notice or think of it.

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