When I drag a tab between two columns in the same Sublime window, my CPU spikes and my OS hangs for a few seconds. Eventually the tab is moved, but sometimes is moved to a new window.
Moving tabs between columns using the Shift + Ctrl + 1 / 2 shortcuts works normally. Re-ordering tabs via drag-n-drop also works normally. Dragging between different windows also works without issue. This issue does not occur in the previous build (2126).
Current Build: 2139
OS: Ubuntu 11.10 x64