Removing Dotted line around Mouse click area in webview

[nidos]

Hi,
Everytime I click on a text or an image in my webview, a gray dotted line is displayed around the focused area (when the mouse is released) and remains on it until I click on something else .
Also, I noticed that using webView->setRenderHints(QPainter::Antialiasing) amplifies the problem.
Any Ideas about how to remove or make it transparent? Thanks.