How to reproduce:
1. Open the attached “BuilderBug.zip” project
2. Open Menu > Tools > ProBuilder > ProBuilder window
3. Press “New Shape” and select “Stairs”
4. Change “Circumference” to 360 and increase the “Inner Radius”
5. Move the cursor to the Scene window and hold the shift key
6. Observe the result

Expected result: Stairs have an inner radius
Actual result: Stairs don’t have an inner radius

Reproducible with: 5.0.6, 5.0.7 (2020.3.47f1, 2021.3.24f1, 2022.2.17f1, 2023.1.0b14, 2023.2.0a12)
Could not test with: 5.0.4 no “Inner Radius” setting

Reproduced on: macOS 13.2.1 (Intel)

Note: After placing the Stairs, the “Inner Radius” is set to 0