Modifiers disappearing from UI #75878

New Issue

mantissa · 2020-04-18T21:24:31+02:00

mantissa commented

2020-04-18 21:24:31 +02:00

System Information
Operating system: Linux-5.4.0-24-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: GeForce RTX 2070 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.64

Blender Version
Broken: version: 2.83 (sub 13), branch: master, commit date: 2020-04-17 20:03, hash: 76b3aac802
Worked: 2.82, 2.83 builds from roughly two weeks ago.

Short description of error
When working with a bunch of modifiers, the next modifiers in the stack disappear from the UI until it is collapsed.
I think the VertexWeightEdit modifier is the cause, but I'm not 100% sure.
I've attached a file that shows the problem.

Exact steps for others to reproduce the error

Invisible Modifiers.blend

Hard to say when exactly it happens.
Usually only occurs when a number of modifiers have been added, I think having a VertexWeightEdit in the stack might be the issue, but it could be something else.

If you collapse the visible modifier in the attached file, the others show up and similarly disappear again when the top one is unfolded.

**System Information** Operating system: Linux-5.4.0-24-generic-x86_64-with-debian-bullseye-sid 64 Bits Graphics card: GeForce RTX 2070 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.64 **Blender Version** Broken: version: 2.83 (sub 13), branch: master, commit date: 2020-04-17 20:03, hash: `76b3aac802` Worked: 2.82, 2.83 builds from roughly two weeks ago. **Short description of error** When working with a bunch of modifiers, the next modifiers in the stack disappear from the UI until it is collapsed. I think the VertexWeightEdit modifier is the cause, but I'm not 100% sure. I've attached a file that shows the problem. **Exact steps for others to reproduce the error** [Invisible Modifiers.blend](https://archive.blender.org/developer/F8482243/Invisible_Modifiers.blend) Hard to say when exactly it happens. Usually only occurs when a number of modifiers have been added, I think having a VertexWeightEdit in the stack might be the issue, but it could be something else. If you collapse the visible modifier in the attached file, the others show up and similarly disappear again when the top one is unfolded.

mantissa commented

2020-04-18 21:24:31 +02:00

Added subscriber: @Mantissa

Hans Goudey commented

2020-04-18 22:32:49 +02:00

Added subscriber: @HooglyBoogly

Hans Goudey commented

2020-04-18 22:32:49 +02:00

For what it's worth this is not an issue in the modifier-panels-ui branch:

I don't have time to look into it now, but this is the problem:

Traceback (most recent call last):
  File "/home/hans/Documents/Blender-Git/build_linux_debug/bin/2.90/scripts/startup/bl_ui/properties_data_modifier.py", line 51, in draw
    getattr(self, md.type)(box, ob, md)
  File "/home/hans/Documents/Blender-Git/build_linux_debug/bin/2.90/scripts/startup/bl_ui/properties_data_modifier.py", line 1428, in VERTEX_WEIGHT_EDIT
    self.vertex_weight_mask(layout, ob, md)
  File "/home/hans/Documents/Blender-Git/build_linux_debug/bin/2.90/scripts/startup/bl_ui/properties_data_modifier.py", line 1390, in vertex_weight_mask
    obj = md.mask_text_map_object
AttributeError: 'VertexWeightEditModifier' object has no attribute 'mask_text_map_object'

For what it's worth this is not an issue in the `modifier-panels-ui` branch: ![image.png](https://archive.blender.org/developer/F8482327/image.png) I don't have time to look into it now, but this is the problem: ``` Traceback (most recent call last): File "/home/hans/Documents/Blender-Git/build_linux_debug/bin/2.90/scripts/startup/bl_ui/properties_data_modifier.py", line 51, in draw getattr(self, md.type)(box, ob, md) File "/home/hans/Documents/Blender-Git/build_linux_debug/bin/2.90/scripts/startup/bl_ui/properties_data_modifier.py", line 1428, in VERTEX_WEIGHT_EDIT self.vertex_weight_mask(layout, ob, md) File "/home/hans/Documents/Blender-Git/build_linux_debug/bin/2.90/scripts/startup/bl_ui/properties_data_modifier.py", line 1390, in vertex_weight_mask obj = md.mask_text_map_object AttributeError: 'VertexWeightEditModifier' object has no attribute 'mask_text_map_object' ```

William Reynish commented

2020-04-19 09:53:49 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'