Regression in [0] caused the outliner not to draw at the clamped scroll
position. This meant searching in the outliner could show no results
even when results were found. It also meant deleting objects could show
nothing until the user manually forced the outliner to redraw.
Workaround the problem by detecting when outliner drawing changes the
scroll position and draw again. While inelegant this doesn't happen
often in practice.
Fixing without a second draw likely involves resolving the order of
initialization problem by separating bounds calculating from drawing.
[0]: a63ac425d0
7ae7592899