A message is displayed in the override window, "The inspector tab is not the active Terrain inspector, paint functionality disabled" when changes are made to the instance of Terrain settings. This message is, however, clipped in the override window. Refer to the attached video.

Steps to reproduce:
1) Create a new project
2) GameObject > 3d Object > Terrain
3) Create a prefab of Terrain by dragging to project browser
4) Make some changes in Terrain settings of the instance in the hierarchy
5) In the Override window, Select Terrain

Actual result: The message displayed in the override window, "The inspector tab is not the active Terrain inspector, paint functionality disabled" is clipped

Expected result: The message should not be clipped

Occurring on: 2020.1.0a14, 2019.3.0b12, 2019.2.11f1, 2019.1.8f1, 2018.4.1f1

Environment: Both Windows and Mac