On the last three betas I’ve gotten this persistent loading symbol on top of the glyphs in the menu:
I’m running v1.4.0.beta10 +70 at the moment.
Menus seems a bit off, compared to the menus on meta.discourse.org:
As you can see, this happens in the admin panel, with the CSS disabled, too.
I don’t have too much weird installed:
I get the same bugs in Opera 32.0.1948.4 (beta), Chrome 44.0.2403.157 m (64-bit), Edge 20.10240.16384.0, and Firefox 40.0.3.