It turns out we've been extremely lucky, in that the commit which fixes (or hides?) this bug landed in Qt 5.6 just yesterday:
https://codereview.qt-project.org/#/c/153945/ I've tried building Qt with and without that commit, and indeed it makes a difference. ** Also affects: qtbase-opensource-src (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1613670 Title: Webview turns white after clicking on it Status in oxide-qt package in Ubuntu: Confirmed Status in qtbase-opensource-src package in Ubuntu: In Progress Bug description: This happens on yakkety with unity7 (xcb). 1) Go to System Settings -> Online Accounts 2) Choose "Add account" 3) Choose Google, Facebook, Evernote or any web-base providers 4) Wait for the page to load 5) Click anywhere on the page (even clicking on a scrollbar triggers this behaviour) After step 5, the webview will turn white, and apparently stop responding. When running signon-ui with logging enabled, one can see several warnings coming from Oxide: http://paste.ubuntu.com/23061298/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/oxide-qt/+bug/1613670/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp