Slicing Stuck on "Discover Shells"

[CCS86]

What happened?

The model will not complete slicing. It stays stuck on [preparing infill > discover shells]

The sliced preview looks fine and it will complete when infill is set to 0%

Project file & How to reproduce

... Giant+Dinosaur+Bone2.zip

Version

2.5.60

Operating system

Windows 10 x64

Printer model

No response