I think I found a bug.
In version 1.3.1, I have a.js on the primary editor.
I can right click to “Split Right”. So now a.js is on the left editor and right editor at the same time. Notice a.js is not the only file on the left/original editor.
Drag and drop a.js to the right editor. Atom will halt at this point.
My expectation: I can drag and drop a.js to the right editor. Nothing should happen. Atom should not halt.