QtCreator couldn't work if give a "Enter" at the end of codes with gray underline in Edit View.

Steps:
1. Open Qt Creator ,create an Qt quick application with harmattan components . Other settings just use the default option.
2. Switch to Edit view ,chose main.qml
3. Add "

" in the code, see screenshot. There is a gray underline showing up.
3. Press the "enter key" at the end of codes with gray underline.

Actually result:.
QtCreator couldn't work anymore. It seems creator is about to crash, there is no crash log, and have to force quit it from MAC OS.