The icon panel flyout was placed by its left edge, 262 points left of
the icon column, at a width of 256: a panel whose content is wider
(Separations Preview, Align, Transform, Stroke, Attributes, Gradient)
grew to the right, over the panel icons. It is now pinned by its right
edge, 6 points left of the column, so a wider panel grows towards the
canvas; panels of the usual width sit where they did.
Fixes#236.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>