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fix(core): iOS box-shadow alpha was applied twice - #11407
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The shadow layer's opacity is set from the color's alpha, and the same color, alpha included, was also handed to shadowColor — so a CSS rgba(0, 0, 0, 0.3) shadow rendered at 0.09 and the usual subtle values were all but invisible. The color is now passed opaque and the alpha lives in shadowOpacity alone.
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CatchABus
approved these changes
Sep 3, 2026
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drawBoxShadowinui/styling/background.ios.tssetsshadowLayer.shadowOpacityfrom the CSS color's alpha and then also assignsshadowLayer.shadowColorfrom the sameColor, whoseCGColorstill carries that alpha. Core Animation multiplies the two, so the effective opacity is the alpha squared:rgba(0, 0, 0, 0.3)renders at 0.09, and the subtle values designs actually use (0.08 to 0.15) are effectively invisible.Fix
Pass the color opaque (
colorWithAlphaComponent(1)) so the alpha lives inshadowOpacityalone.shadowOpacitystill reflects the CSS alpha, so nothing that reads it changes.