How to reproduce:
1. Create and open a new project
2. Install the ProBuilder Package
3. Import the attached "ProblematicModel.fbx"
4. Drag it into the "SampleScene" and select it
5. Open the BroBuilder window from Tools > ProBuilder > ProBuilder Window
6. Click ProBuilderize in the BroBuilder window

Expected result: the model is successfully prepared for work with ProBuilder
Actual result: a StackOverflowException occurs and the model gets corrupted

Reproducible with: 3.0.0 (2018.4.23f1), 4.2.1 (2020.2.0a15), 4.2.3 (2020.1.0b13), 4.3.0-preview.4 (2020.2.0a15), 4.3.1 (2018.4.23f1, 2019.4.1f1, 2020.2.0a15)

Notes:
-Very rarely the Editor crashes without leaving a stack trace
-The issue also reproduces with .dae and .obj file formats
-The issue doesn't seem to be related to the size of the model as a smaller version of the provided model still reproduces the issue
-There are no errors when importing the model to warn about the incompatibility of it