The WrapMode icons appear a significant distance under their respective keys and can often not be seen without resizing the curve window in the inspector.

Repro steps:
1. Open an existing project or create a new one.
2. Select any curve in the Particle System
3. In the curve editor window, observe the WrapMode icon.

Expected result: WrapMode icon to appear next to the curve key.

Notes:
- Regression found in 2018.1 and in this 2017.3 bugfix branch: https://ono.unity3d.com/unity/unity/pull-request/55549/_/2017.3/se/particle-fixes