Adding new hook while in Edit mode breaks when trying to undo/redo the operator #50423
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Reference: blender/blender#50423
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Delete Branch "%!s(<nil>)"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
System Information
Win7 (32bit)
Blender Version
Broken: 2.78a
Short description of error
Exact steps for others to reproduce the error
Screencast: screencast0001-0250.mp4
Changed status to: 'Open'
Added subscriber: @SergeL
#101763 was marked as duplicate of this issue
#80280 was marked as duplicate of this issue
#74486 was marked as duplicate of this issue
#64612 was marked as duplicate of this issue
Added subscribers: @JulianEisel, @Sergey, @mont29
Yuck, that’s ugly undo/redo issue again… Not sure we can do much about that kind of glitches currently, problem is that you are in Edit mode, which does not handle undo/redo of things like modifiers etc. Unless maybe @Sergey or @JulianEisel have ideas?
Hook modifier duplicatingto Adding new hook while in Edit mode breaks when trying to undo/redo the operatorAdded subscriber: @RayMairlot
Added subscriber: @mano-wii
This is still a issue in blender 2.83.
Removed subscriber: @RayMairlot
Added subscribers: @Mets, @dr.sybren, @ideasman42
The problem is that an action can either store an undo step for edit mode (which doesn't include things outside of edit mode, such as the pose bone properties) or it can store the entire scene in memory (which doesn't include edito mode data). Deleting a bone changes both sets of data, so it cannot be properly un-done with just one step. This is a limitation that needs proper design work to resolve.
Added subscriber: @a690089735
Added subscribers: @TodorNikolov, @iss
@dr.sybren any news on this? Any plans for the redesign to happen during 3.x?
This bug has the potential to wipe out hours of work (happened to me). It's hard to accept that it has been known for 5+ years, is considered "Normal" severity, and is assigned to no one.
Added subscriber: @DrMc
I've been looking for a bug to start developing - Sybren suggested the getting started list but others have picked off most of that. @dr.sybren do you think this would be a tractable bug for a experienced developer who is new to Blender?
@DrMc I wouldn't pick this one, fixing it properly requires knowledge of how the undo system works, and that's far from trivial. I know of a bug that I didn't file yet, so I'll do that and assign it to you, I think it's a nicer one ;-)
Added subscriber: @walt-3