This issue was reported by [~hgreule].

When self-inverting java/lang/Character.reverseBytes InvolutionNode::Identity can drop necessary masking of subword types. When calling Character.reverseBytes with a wider integer type than char, this leads to a wrong execution when the char result of the self-inverse is used as an int, e.g. in an array access, where a large enough value will cause an unexpected ArrayOutOfBoundsException (see reproducer).