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GPencil: A copied GP layer is linked to its original layer
Closed, ResolvedPublic

Description

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 388.76

Blender Version
Broken: version: 2.81 (sub 11), branch: master, commit date: 2019-09-17 19:54, hash: rB9609840b5ea1
Worked: (optional)

Short description of error
If you make a copy of layer by "Copy Layer to Object", the copied layer is not actually a copy but it is like a shallow copy.
If you edit a copied layer, the change affects the original one.

Exact steps for others to reproduce the error

  1. Select a layer of GPencil
  2. Copy the layer to GPencil.001 by click Copy Layer to Object > GPencil.001
  3. Draw something on the copied layer of GPencil.001
  4. Select GPencil and then go to Edit Mode. The change in GPencil.001 suddenly appears in GPencil