1) Create new project
2) In editor, under Preferences-> General enable 'Verify saving assets'
3) Create new script and attach it to new GameObject
4) Edit the script (a print("hello") statement will do in Start()
5) Save script
6) Go back to editor and save scene
Notice that confirmation message will pop up.
7. Click save All
Notice that last focused window comes in front of Unity window.

Expected results: Clicking on Save all button does not affect window focus
Actual results: Clicking on Save all button makes Unity Editor loose its focus

Note: Issue occurs with both MonoDevelop and Visual Studio code editors.