With more and more of Zed coming back online on top of the new framework, this week we really put our focus on understanding and improving GPUI's performance. We had a timing issue with editor splits where the newly created editor pane wouldn't be rendered yet when we ran the focus handlers for the focus change. We changed focus handlers to instead be called on each frame draw, after the element tree had been rendered, so we'd have the most up to date information about the focus tree structure.