Regression - not reproduces on 5.2.3p2 and 5.3.0f3 - so, started in 5.4.x

2. How we can reproduce it
1 Create New project
2 In main Menu select Window->Lighting ( - Lighting window should appear)
3 Uncheck "Auto" checkBox and press "Build" - button - the Pop up warning window should appear telling that "You need to save scene before baking lightmaps or light probes."
4 Press "Cancel"
Actual result: log appeared in Console -
"GetApplication().MayUpdate()
UnityEditor.DockArea:OnGUI()"

- please see attached image