TechDraw: Many dimensions break Windows/Linux -> Mac

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Problem description

When someone sends me a file created on Windows and/or Linux (I usually don't know which), many of the dimensions are broken when I open the file on Mac.

Some of the parts are very simple: sheet metal with various internal / external cuts. Some only slightly more complex (for 3D printing).

Is this a known issue? Are there specific issue numbers I can track? (I attempted a search but didn't find anything -- sorry if I missed some obvious tickets.)

Any workarounds? Anything I can do to help, other than diving into the source code? (It's likely much too large of a project.)

---

(I attempted to post this on forum.freecad.org a few days ago but either it hasn't appeared or I'm overlooking it somehow.)

### Full version info

```shell
Many previous versions, and my current one:

OS: macOS 14.4
Architecture: arm64
Version: 1.0.2.39319 (Git) Conda
Build type: Release
Branch: (HEAD detached at 1.0.2)
Hash: 256fc7eff3379911ab5daf88e10182c509aa8052
Python 3.11.13, Qt 5.15.15, Coin 4.0.3, Vtk 9.3.0, OCC 7.8.1
Locale: C/Default (C)
Stylesheet/Theme/QtStyle: FreeCAD Light.qss/FreeCAD Light/Fusion
Installed mods:
* sheetmetal 0.7.22
```

### Subproject(s) affected?

None

### Anything else?

_No response_

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct