Open Radar

 
Summary:
With specific versions set in the Version editor's Comparison view, using "Jump to Line in <file>..." resets the versions selected in the panes

Steps to Reproduce:
1. open/create a project w/ >= 2 committed revisions
2. open a file in the Version editor's Comparison view (I was looking at a storyboard file)
3. change the right pane to the (BASE, HEAD) revision
4. change the left pane to that revision's predecessor
5. click/focus in the right (i.e., "(BASE, HEAD)") pane
6. press Command-L (assuming standard keyboard mappings) to open the [jiump to] "Line Number" overlay
7. enter a valid number (500 for me in my 600+ line storyboard XML)

Expected Results:
right pane jumps to line 500 in the (BASE, HEAD) revision;
left pane jumps to the related lines in the prior revision

Actual Results:
both panes "blink," flashing "No editor"
when they stabilize, the right pane has become "Local revision" and the left "(BASE, HEAD)"