Whether the engine understands CSS anchor positioning (anchor-name,
position-anchor, position-area, position-try). Baseline since January
2026. When this is false, the enhancers run the JS positioning fallback
so floating surfaces are still placed against their anchor.
Whether the engine understands CSS anchor positioning (
anchor-name,position-anchor,position-area,position-try). Baseline since January 2026. When this isfalse, the enhancers run the JS positioning fallback so floating surfaces are still placed against their anchor.