Align Rotation to Euler bug when toggling Edit Mode -> Object Mode #94111

New Issue

Catalin · 2021-12-15T15:17:23+01:00

Catalin commented

2021-12-15 15:17:23 +01:00

System Information
Operating system: Windows 10
Graphics card: RTX 2070 Super (x2)

Blender Version
Broken: 3.1.0 Alpha, 56ff954030, master, 2021-12-02 18:49
Worked: 3.0 Beta (?)

Short description of error
Wall breaks apart, at random locations and with random look, for each toggle of Edit Mode -> Object Mode.

Exact steps for others to reproduce the error

With provided file: simple_example.blend

Select NurbsPath object
Toggle Edit Mode -> Object Mode

Additional info: The object on which the issue is present is a Path object, with some options toggled on it, like Toggle Cyclic (and maybe a Smooth on all points, but can't remember)
The other one on the right is a Curve Circle, with the same GN setup applied on it.

Also worth mentioning that I tried to see if this happens with Blender 3.0 (opened the same file and changed "Compare" node to "Compare Floats") and it seems that the Capture Attribute is not working for the Curve Tangent, so couldn't confirm when this "worked".

blender_bug.mp4

While further developing this wall setup, I've come across this extra detail: adding a Resample Curve at the beginning of the node tree removes the issue.

blender_curve_bug.mp4

Found out it might be caused by Align Euler to Vector node. When setting Pivot point from "Auto" to "Z", the issue is less pronounced, BUT there are still some slight rotation shifts on the instances.

Most definitely it's the Align Euler to Vector. Updated with a simpler example file.

minimal_example.mp4

**System Information** Operating system: Windows 10 Graphics card: RTX 2070 Super (x2) **Blender Version** Broken: 3.1.0 Alpha, 56ff9540307e, master, 2021-12-02 18:49 Worked: 3.0 Beta (?) **Short description of error** Wall breaks apart, at random locations and with random look, for each toggle of Edit Mode -> Object Mode. **Exact steps for others to reproduce the error** With provided file: [simple_example.blend](https://archive.blender.org/developer/F12749928/simple_example.blend) 1. Select NurbsPath object 2. Toggle Edit Mode -> Object Mode Additional info: The object on which the issue is present is a Path object, with some options toggled on it, like Toggle Cyclic (and maybe a Smooth on all points, but can't remember) The other one on the right is a Curve Circle, with the same GN setup applied on it. Also worth mentioning that I tried to see if this happens with Blender 3.0 (opened the same file and changed "Compare" node to "Compare Floats") and it seems that the Capture Attribute is not working for the Curve Tangent, so couldn't confirm when this "worked". [blender_bug.mp4](https://archive.blender.org/developer/F12747946/blender_bug.mp4) While further developing this wall setup, I've come across this extra detail: adding a Resample Curve at the beginning of the node tree removes the issue. [blender_curve_bug.mp4](https://archive.blender.org/developer/F12749776/blender_curve_bug.mp4) Found out it might be caused by Align Euler to Vector node. When setting Pivot point from "Auto" to "Z", the issue is less pronounced, BUT there are still some slight rotation shifts on the instances. ![image.png](https://archive.blender.org/developer/F12749916/image.png) Most definitely it's the Align Euler to Vector. Updated with a simpler example file. [minimal_example.mp4](https://archive.blender.org/developer/F12749949/minimal_example.mp4)

Catalin commented

2021-12-15 15:17:23 +01:00

Added subscriber: @cata_cg

Catalin changed title from ~~Weird Instance Rotation when toggling Edit Mode -> Object Mode~~ to Align Rotation to Euler bug when toggling Edit Mode -> Object Mode

2021-12-15 21:22:30 +01:00

Germano Cavalcante commented

2021-12-23 20:48:44 +01:00

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