Reproduction steps:
1. Open the “DoubleCurve“ project
2. Open the “SampleScene“ scene
3. Select the “Test” GameObject
4. Observe the curve preview in Inspector
Expected result: there is a single curve displayed and it is displayed correctly
Actual result: there is an additional short curve displayed at the start
Reproduced in: 2022.2.0a4, 2022.2.7f1, 2023.1.0b3, 2023.2.0a2
Not reproduced in: 2020.3.45f1, 2021.3.19f1, 2022.2.0a3
Reproduced using: macOS 13.0.1 (Intel), Windows 10 (by reporter)