Negative modifiers appear to have incorrect units

[stefansjs]

Is there an existing issue for this problem?

• I have searched the existing issues

OrcaSlicer Version

2.1.1

Operating System (OS)

Windows

OS Version

Windows 10

Additional system information

No response

Printer

Voron 0.2

How to reproduce

1. add a primitive
2. add a modifier to theprimitive
3. copy the combination
4. scale the combination
5. scale the modifier using mm units (not percentage)

Actual results

It appears the units of the modifier are scaled in some way that don't preserve mm units. the modifier will appear smaller if they are scaled down to the same size as the original model, but using the same mm units.

Expected results

I expect 5mm to be 5mm in the copied object.

Project file & Debug log uploads

overhang-bridging test 3mf project.zip

The first plate shows a bunch of scaled versions of the same primitive. If you look at the 4 smallest objects on the front of the plate you'll see the relative thickness of the cylinder is different for each one. In all 4 cases the thickness of the solid cube is 3mm, and the cylinder modifier is 5mm, but the apparent size of the cylinder is not 5mm.

Checklist of files to include

• Log file
• Project file

Anything else?

Thanks for a great slicer. This program is great.