In certain circumstances the Text Comparison Tool won't display anything. I get just a gray box. I click to open it from the Tools menu and it places it in one of my window panes just fine. But if I move it to a window pane with the CSB and the ESV open in tabs and want the TC tool to open in a third tab it won't show results. I can move it to other window panes and it display fine. Strange. I've got 7.17 beta 3 installed on Mac.
