A drawing of two equal, separate outlines (RC-204441A23 PT13) froze the
drawing library preview. ShapeProfile takes one outline as the perimeter
and the other as a cutout, so the net area is rounding noise and
ThicknessPrecision fell to 1e-9. A rectangle's pole is a whole ridge, so
the label search refined it into billions of cells on the UI thread.
Net area negligible next to the outline now falls back to the outline's
own width, and the paint-time label search has a cell budget so no shape
can stall painting.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ajandClaude Opus 5.5
f9b718e890