[13.x] Add unicode modifier to SeeInHtml normalize whitespace regex#60090
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taylorotwell merged 1 commit intoMay 13, 2026
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SeeInHtml::normalize()is used byassertSee()-family assertions. The method explicitly decodes with'UTF-8'on the line above, but the trailingpreg_replace('/\\s+/', ' ', $value)doesn't have the/uflag — so HTML containing Unicode whitespace (non-breaking space, ideographic space, etc.) gets left in place instead of collapsed, causingassertSee()matches to silently fail. Same shape as #60056.