When the graph column is small, the graph sometimes appears through the text of the next column on Vista

Problem found at version:
0.5.1

What steps will reproduce the problem?
1. Find log with relatively wide graph
2. Make graph column small
3. Move mouse over log lines

What is the expected output? What do you see instead?
I see the graph appear through the text on the line where the cursor is 
hovering over.

Please use labels and text to provide additional information.
See attached screenshot.
For an example of a wide graph see commit:
f3a4ec48e402a7b49d410bdcb23470e9723788b0 (2006-02-28)
On repo
git://git.kernel.org/pub/scm/git/git.git

Original issue reported on code.google.com by johanth...@gmail.com on 8 Apr 2009 at 10:34

Attachments:

TGitlogviewGraph.jpg

xuyongli73 / tortoisegit

When the graph column is small, the graph sometimes appears through the text of the next column on Vista #64