Extensive Accessibility warnings in Creator console, possible performance degradation

Since moving to Qt 5.0.1 I am getting extensive amount of Accessibility related warnings from pretty much every UI component. Getting those in the Creator console regardless whether it is debug or release mode.

Cannot create accessible interface for object: QProgressBar(0x35fb30, name = "prog")
Cannot create accessible interface for object: QProgressBar(0x35fb30, name = "prog")
Cannot create accessible interface for object: QProgressBar(0x35fb30, name = "prog")
Cannot create accessible interface for object: QProgressBar(0x35fb30, name = "prog")
Cannot create accessible interface for object: QLabel(0x3888d0, name = "uniqueWordsLbl")
Cannot create accessible interface for object: QLabel(0x388850, name = "totalWordsLbl")
Cannot create accessible interface for object: QLabel(0x3889d0, name = "textCharLbl")
Cannot create accessible interface for object: QLabel(0x388a50, name = "sepCharLbl")
Cannot create accessible interface for object: QLabel(0x388950, name = "totalCharLbl")
Cannot create accessible interface for object: QLabel(0x388ad0, name = "timeLbl")
Cannot create accessible interface for object: QLabel(0x388b50, name = "mcpiLbl")
Cannot create accessible interface for object: QHeaderView(0x23de3c0)
Cannot create accessible interface for object: QHeaderView(0x23de680)
Cannot create accessible interface for object: QTableView(0x23de0c0, name = "tableView")
Cannot create accessible interface for object: QHeaderView(0x23de3c0)
Cannot create accessible interface for object: QHeaderView(0x23de680)
Cannot create accessible interface for object: QScrollBar(0x23de280)
Cannot create accessible interface for object: QTableView(0x23de0c0, name = "tableView")
Cannot create accessible interface for object: QTabBar(0x23781b0, name = "qt_tabwidget_tabbar")
Cannot create accessible interface for object: QWidget(0x2378470, name = "qt_scrollarea_viewport")
Cannot create accessible interface for object: QPlainTextEdit(0x2378430, name = "plainTextEdit")
Cannot create accessible interface for object: QPushButton(0x2378bf0, name = "editBtn")

The warnings don't appear in the "Windows classic" theme, but do appear in "Windows 7" and "Windows 7 basic".

In my particular case, the warnings seem to coincide with a tangible loss of performance.

Attached example reproduces similar warning for QGraphicsTextItem, To reproduce, run the example and double click on text item to edit it and experience following warning:
Warning: Cannot create accessible interface for object: QGraphicsTextItem(0xa251408)

This behavior is reproducible in Qt 5.0.2