I decided to switch to Dev builds today because over the past two days Sublime has become unusable for me. I thought the issue might have been related to a package I installed recently (Six) but after uninstalling it, I experience the same issue.
Every time I open the command palette I get the spinning beach ball and the UI hangs. After 5-10 seconds of spinning, it opens the palette but it seems sluggish. I get similar behavior in the sidebar when I click and when I try to close a project.
I have resolved this issue. A build process that I started for a code assignment I was working on never completed. Killing all node processes in Activity Monitor restored the editor to prior responsiveness.
Is there any way to see (within Sublime) that a build executed through the editor is still running?