This happens with WebKitGTK 2.28.0, both with the MiniBrowser and Epiphany. I can also reproduce it with Cog and WPE WebKit 2.28.0. 1. Open https://twitter.com/ 2. Select the "Log in" button on the top right side 3. Enter a username and password (no need for a valid account, any random text will do) I get this error message most of the times: "Error performing TLS handshake: An unexpected TLS packet was received." Pressing reload and/or trying again a couple of times solves the problem.