"Apply Changes on Save" button doesn't work on Mac.

Steps:
1 Create new Quick quick application.Use default setting and set desktop as a target.
2 Open projects .pro file. Uncomment line DEFINES += QMLJSDEBUGGER and save file.
3 Push "Projects" button in left tab and check "QML debug port:3768" in projects run setting.
4 Choose project in target selector and set debug as build mode.
5 Push "Start debugging" button in left View.
6 Switch to debug mode. Start QML observer mode with observer Button.
8 "Apply Changes on Save" button pressed down, change the code "Hello world " to "Hello",and save it.
9 Select "Reload", when a warning show on head .

Results:
Text in running application still "Hello World" and can not be changed.
"Apply Changes on Save" button doesn't work.

Comments:
Same case in Windows XP goes well.