Qt Quick Toolbar disable

Reproduction steps:
1. Create a Qt Quick UI Application using the wizard
2. Add a Rectangle element to the canvas
3. Go to the editor and write some codes as follows:
/*********************************************************/
Rectangle

{ id: myRect x: 21 y: 162 width: 327 height: 100 color: "#c64444" radius: 20 scale: 1 border.width: 3 }

/*********************************************************/
4. Add the border.color property to the code as border.color:
5. Press Ctrl + Alt + Space to popup the QtQuick toolbar
6. Select the border color in the toolbar and apply

Expected result:
User can select the border color in the toolbar

Actual result:
Press Ctrl + Alt + Space after entering the " border.color:", the rectangle toolbar is disable

Comment:
SDKTestRound5