Consider code like:
---
class Constructors extends BaseWithConstructor {
        Constructors(String name) {
            System.err.println();
            this(name.length());
            super(name.length());
            this(name.length());
        }
        Constructors(int i) {super(i);}
}
class BaseWithConstructor {
    BaseWithConstructor(int len) {}
}
---

Attr.visitApply will not attribute the this/super constructor invocations inside Constructors(String name), as it only attributes the first this/super constructor invocation (if any). As a result Trees.getElement (or Trees.getTypeMirror) will not return good results on AST node from inside these this/super constructor invocations.