When ST is newly started, it is impossible to tab to the 'Replace with' edit box in the Find/Replace tool. This is a minor bug, but I find it annoying because I don't like to use the mouse.
(Edit: I'm using 20091212.)
Steps to reproduce bug:
1. Close ST if it is open.
2. Open ST.
3. Ctrl-N to start a new document if there is not a document open there already.
4. Ctrl-H to bring up the Find/Replace tool.
5. Press Tab to try to move the cursor to the 'Replace with' edit box.
6. Step #5 does not work.
Work-around:
If you click in the 'Replace with' box, then tabbing will work from that point on.