Bug: Saving project with supports in 3d printing causes supports to join/merge with object when saved (no longer supports)

[tyeth]

Luban 4.13.0

I added custom drawn support to the steering wheel and other tall piece with protrusions, then saved.
Opening it next morning the supports are now part of the model and cannot be removed / altered, and wont be printed as supports.
3.) Third Color (Highlights).zip

[tyeth]

I also don't seem to be able to get those supported areas to use Tree supports, despite turning on the option in settings. It first added supports to everything, and then when tweaked it didn't generate any tree supports (instead opting for Grid to cover the areas with Force Support enabled). Now I can't get tree to appear at all.

Maybe someone can try to tree support this model (but only the two items marked in screenshot) as a way of testing the Luban tree supports. Make sure to load a project file first in case that affects things.

[xiwai2]

Hello, thank you for your feedback. It has been fed back to the R&D department and will be evaluated and repaired later.