Realtime light probes are not working correctly in editor.

Steps for reproduction:
1) Download the project below `707267.zip`
2) Open the scene `413-DynamicGI_ChangeSkybox`
3) Build the lighting
4) Observe the issue in editor, the script called `ChangeSkyTint` overwrites realtime light probe data even before entering play mode.
5) When entered into play mode, realtime light probes stop affecting terrain trees

Notes:
- Issue is specific to editor, does not occur in standalone player
- Regression seems to be introduced in 2017.3.x
- GIF below shows how the functionality of realtime light probes change when we enter into play mode from editor
- Static images demonstrate how it should look like and how it currently looks like

Workaround: use non-auto mode.