JDK-8132995 introduced an unintended regression when using instances returned by `java.util.regex.Matcher.toMatchResult()`.

This happens on `java.util.regex.Pattern`s containing lookaheads and lookbehinds that, in turn, contain groups. If these are located outside the match, it results in throwing `StringIndexOutOfBoundsException` when accessing these groups. See JDK-8312976 for an example.