There's a CSS rendering error in Chrome version 45. I know, it's beta, but at some point this will affect the non-beta browser so it's better to fix it now, right? Specifically it's broken on version 45.0.2454.15 dev-m (64-bit) on Windows and Ubuntu. The issue navigator page comes up and it looks OK until the final bits of rendering done by the browser and then you get:
Chrome CSS Rendering problem.png
It may be an add-on I'm not sure.
Let me know if you need any other information.