Comment 162 for bug 1084

The horiz scrollbar should disappear if you make the header pane wider. If the
window is already maximized you can't make it wider, but you can de-maximize it
and then actually stretch the horizontal size so it's *wider* than your screen
by moving the left edge of the window off the left side of the screen (just as
a test, not to really use TB that way).

Is your horiz scrollbar at the top or the bottom of the header pane? Does it
obscure part of the header pane when you display minimal headers?