Move cursor up in editor (Arrow key up) not working when search panel is open

- VSCode Version: Code 1.19.2 (490ef761b76b3f3b3832eff7a588aac891e5fe80, 2018-01-10T16:16:25.767Z)
- OS Version: Windows_NT ia32 10.0.16299
- Extensions: none
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Steps to Reproduce:

1. Open search panel (opened via magnifying glass on side panel, Ctrl+Shift+F, or F4)
2. Set cursor anywhere inside text editor
3. Using arrow keys the cursor will move left, right, and down, but never up.