If you try to customize your pins in Github, everything on the page freezes. After a while, the parts of the page abruptly update and then everything is frozen again.
What's more interesting is that while the URL bar is still accessible, the inspector tab is also extremely slow to load. If the inspector is up before the above interactions begin, the console shows nothing.
No freezing.
Version 0.99.132-beta (WebKit 621.1.2.111.4)
Sequoia (15)
