When the corners get tight with sharp bends, corridor sections will begin to cross one another. This issue is known as a “Bow Tie."
Once a Bow Tie is created, the corridor will not behave as expected and corridor commands will experience issues too.
You can correct this issue a few different ways:
- Modify frequency and sampling settings.
- Add curve to the bend (PI).
- Use a custom assembly in region along with gradings.