Ported from upstream: bambulab#10897

Bambu Studio Version

win-v02.06.00.51

OS version

Windows 10

Printer

X2D

How to reproduce

1. Create a new project with the default 0.2mm layer height profile.
2. Insert a Cube model.
3. Set the raft layer count to 1.
4. Assign support filament material to raft interfaces and confirm recommended parameter adjustments. This puts the Cube on the Raft without Z distance.
5. Proceed with slicing.

Actual results

1. Measured raft layer height is 0.3mm; the initial print layer starts at 0.4mm, sinking 0.1mm into the raft.
2. The initial layer wall printing speed deviates from the preset 50mm/s, running at approximately 200mm/s.

Expected results

1. The raft layer height should be 0.2mm; the initial print layer starts at 0.4mm.
2. The initial layer wall printing speed should be 50mm/s.