Thank you for your reports. There is nothing suspicious in the logs.
Could you send a backtrace of the crash?
(https://www.slicer.org/wiki/Documentation/Nightly/Developers/Tutorials/Debug_Instructions#Analyze_a_segmentation_fault)
Are there other ways you can crash Slicer (loading data, running CLI modules, etc)?
Does a web browser appear if you run the following code in the Slicer Python console (Ctrl + 3)?
w=qt.QWebView(); w.setUrl(qt.QUrl('http://www.google.com')); w.show()