Duplicate connections rendered only once

[NagatoYuki0943]

• Netron app and version: 7.3.7 Desktop app
• OS and browser version: Windows 10 Pro 21H2 19044.3086

Steps to Reproduce:

1.The concat module of YOLOv8 has 3 inputs, but only 2 lines are drawn in the diagram. The larger YOLOv8 model may have more than 3 inputs in the concat module, and there is also one less line drawn in the diagram.

2.the pic

Please attach or link model files to reproduce the issue.

yolov8n.zip