Created attachment 316639 [details] gmail screenshot Environment WebkitGTK version: -4.0-37 GNOME/GTK+ versions: 3.22.17-0ubuntu1 GNU/Linux distribution: Ubuntu 17.10 (artful) Bug/Feature As the screenshot shows, the gmail page is garbled. After mouseover, that portion of the page gets rendered correctly only to be garbled back again after a few seconds.
We are aware of this issue, you may want to subscribe to bug #168964 and comment there which GPU you have, and which version of the graphics drivers you are using. We are trying to narrow down the issue, so that would be helpful. And thanks for reporting! *** This bug has been marked as a duplicate of bug 168964 ***