Diff does not show properly and UI Broken

File Status Pane
Once you select to do a diff from the pending files, you can no longer do a diff on unstaged files. The diff continues to show the selected item in the pending files pane, not the selected item in the unstaged files pane.

Also experiencing the following:
Not able to drag the diff pane to make it larger. The move icon shows but the pane will not resize. This is annoying because you can't get to the Stage/unstage buttons without scrolling the diff pane.

Many areas of the diff pane are not repainting. For example, if the diff pane has 3 hunks and the first hunk is the widest, it repaints fine. However, the 2nd and 3rd hunk only repaint the window to the width of the hunk leaving the far right as the default background color. In my case, the background of the diff is white but the background window color is gray so I have strange gray boxes on the right for diffs with smaller widths.