Qml/JS: Find Usages finds irrelevant occurrences

Steps to reproduce:

• have a Qt4 kit and a Qt5.2 kit configured, make sure the Qt5.2 kit is the default kit
• open an old project (propertyanimation from old QtSDK worked for me)
• when configuring the project de-select the default kit (Qt5.2) but check the Qt4 kit and hit 'Configure Project'
• inside one of the qml files place the cursor on an anchors.left property
• invoke 'Tools' -> 'QML/JS' -> 'Find Usages'

Current result:

• usages list also occurrences inside the Qt5.2 kit although it should list only occurrences of the current project and the Qt5.2 is not even selected/configured for this project (see attached screenshot)