CT7 gate regression (owner report): all MossTank plugin text vanished
except button captions. A markup <label> authors position only, so
UiLabel's box was degenerate (0x0) and CT-GF1's completed self-clip
(UIRegion::DrawHere @0x0069FA30 shape) cropped its glyphs to nothing;
markup buttons author w/h, which is why their captions survived.
UiLabel now opts out of the self-clip — it is ClickThrough pure text
whose real containment is its ancestors (the plugin panel/window, which
are properly sized), the effective retail behavior for a text region
whose box hugs its glyphs — and keeps a truthful box by measuring its
current text each draw. Mechanism pin: an unsized label's subtree must
render inside its sized parent (probe-child draw-capture test).
Gate note recorded by the owner in the same round: the Titles-page
divider IS visible inside the window in retail while scrolling — a
retail quirk our clipped rendering now reproduces exactly. CT7 gate
PASSED apart from this regression.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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