Enabling "Only one wall on top surfaces" produces weird inner walls that crash the printer.

[ScheglyakStas]

Is there an existing issue for this problem?

• [x] I have searched the existing issues

OrcaSlicer Version

2.3.0 official release

Operating System (OS)

Windows

OS Version

Windows 10 Pro 22H2

Additional system information

CPU: Ryzen 7 5700G GPU: integrated Memory: 16GB DDR4

Printer

Creality K1

How to reproduce

Slice the attached file with "Only one wall on top surfaces" enabled.

Actual results

As you see on the photo, the inner wall on the top surface looks weird, and the printer crashes with "timer too close" error after reaching that wall.

Expected results

The model should be printed without any issues.

Project file & Debug log uploads

Magnet cover.zip

Checklist of files to include

• [ ] Log file
• [x] Project file

Anything else?

If I disable the "Only one wall on top surfaces" option, the model is printed without issues.