Instantiation of prefab with trial renderer (alignment = Local, width curve contains more than one key) leads to assertions:

Assertion failed: Assertion failed on expression: 'curveT >= GetRange().first && curveT <= GetRange().second'
Assertion failed: Assertion failed on expression: 'curveT >= m_Curve[lhs].time && curveT <= m_Curve[rhs].time'

Repro:
1. open scene trail.unity in attached project
2. Enter playmode
3. Press "space" button to instantiate prefab with trailRenderer

Actual result: prefab instantiates with assertion
Expected: prefab instantiates without assertion

Notice, assertions don't appear if prefab is added on the scene before entering playmode

Reproduced: 2017.3.0b10 , 2018.1.0a1
Not reproducible: 2017.2.0f1