We just pushed out a beta release that includes Qt 5.6.1, having upgraded recently from 5.5. We are now seeing major crash issues in QtWebEngine around the OpenGl context primarily affecting Windows 7 users. We are now experiencing 100% more crashes than with 5.5 This is a blocking issue from us being able to release any new version of our client until it is addressed. We can also not risk updating our customers to 5.7 until we are sure this issue has been properly addressed. I am attaching a crash report with stack trace information along with a dmp file for the crash. Please let me know if there is any more information I can give to you and I will supply it ASAP.