Expected Behavior: Display the digit “6”.
Actual Behavior:
The rendered character appears as a composite glyph—the left half resembles “9” and the right half resembles “6”, resulting in a malformed digit.
other examples：
Environment & Characteristics:
Occurs intermittently on iPhone 15 Pro Max and iPhone 16 Pro Max. Reproducible within the Taobao App, specifically in WKWebView. Font Used: AlibabaSans102_v1_TaoBao-Bd.ttf