Incorrect behavior using Add Models in 2.3.x versions on MacOS #1927

New Issue

MrUnknownDE · 2026-04-05T21:20:18+02:00

MrUnknownDE commented

2026-04-05 21:20:18 +02:00

Originally created by @ugen-james on 10/12/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.0, 2.3.1

Operating System (OS)

macOS

OS Version

macOS 26.0.1

Additional system information

No response

Printer

Anycubic Kobra 3/Creality CR-10/Snapmaker A350

How to reproduce

https://github.com/user-attachments/assets/230040f0-1ef1-4a33-ab0e-27c0e00bb3b8

Create New Project with version v2.3.0 or v2.3.1 macOS
Use any method to add new object to default Plate
- Observe after import:
  - Slice action is not available
  - Object exists in "Outside" grouping, not a plate

Attempt to drag object from "Outside" group to Plate fails

Actual results

Object is added to Outside group and not associated with a Plate. If no action is taken, the application does not provide the user any meaningful way forward to slicing despite the object appearing on the plate visually.

Expected results

Object is added to the active plate (as it behaves in previous releases)

Project file & Debug log uploads

test_project.3mf.zip
log.zip

Checklist of files to include

Log file
Project file

Anything else?

I tested this with both 2.3.1 and 2.3.0 and then confirmed it did work as expected in the previous releases. 2.2.0 is usable for Plate arrangement, but 2.30 and later are unable to manage projects and organize plates properly.

*Originally created by @ugen-james on 10/12/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.0, 2.3.1 ### Operating System (OS) macOS ### OS Version macOS 26.0.1 ### Additional system information _No response_ ### Printer Anycubic Kobra 3/Creality CR-10/Snapmaker A350 ### How to reproduce https://github.com/user-attachments/assets/230040f0-1ef1-4a33-ab0e-27c0e00bb3b8 * Create New Project with version v2.3.0 or v2.3.1 macOS * Use any method to add new object to default Plate * Observe after import: * Slice action is not available * Object exists in "Outside" grouping, not a plate --- * Attempt to drag object from "Outside" group to Plate fails ### Actual results Object is added to Outside group and not associated with a Plate. If no action is taken, the application does not provide the user any meaningful way forward to slicing despite the object appearing on the plate visually. ### Expected results Object is added to the active plate (as it behaves in previous releases) ### Project file & Debug log uploads [test_project.3mf.zip](https://github.com/user-attachments/files/22874390/test_project.3mf.zip) [log.zip](https://github.com/user-attachments/files/22874389/log.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? I tested this with both 2.3.1 and 2.3.0 and then confirmed it did work as expected in the previous releases. 2.2.0 is usable for Plate arrangement, but 2.30 and later are unable to manage projects and organize plates properly.

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Reference: github/OrcaSlicer#1927