Compilation failure when using annotations in generic type parameters of extension methods

[EotT123]

Using annotations on generic type parameters in an extension method causes a compilation failure in Manifold.

@Extension
public class StringExt {
    //                           |
    //                           |
    //                           v
    public static <T extends @Nullable Object> T test1(@This String text, Function<String, T> mapper) {
        return mapper.apply(text);
    }

    //                                                                 |
    //                                                                 |
    //                                                                 v
    public static <T> T test2(@This String text, Function<String, @Nullable T> mapper) {
        return mapper.apply(text);
    }
}

This results in a rather informative error: An unknown compilation problem occurred when compiling.

I had to run the compilation process in debug mode to track down the actual cause:

manifold.api.gen.TypeNameParserException: expecting 'extends' or 'super'
	at manifold.api.gen.TypeNameParser.verifySuperOrExtends(TypeNameParser.java:160)
	at manifold.api.gen.TypeNameParser.parseType(TypeNameParser.java:91)
	at manifold.api.gen.TypeNameParser.parseCompoundType(TypeNameParser.java:151)
	at manifold.api.gen.TypeNameParser.parseType(TypeNameParser.java:92)
	at manifold.api.gen.TypeNameParser.parse(TypeNameParser.java:43)
	at manifold.api.gen.SrcType.<init>(SrcType.java:61)
	at manifold.internal.javac.SrcClassUtil.makeTypeVarType(SrcClassUtil.java:1109)
	at manifold.internal.javac.SrcClassUtil.addMethod(SrcClassUtil.java:370)
	at manifold.internal.javac.SrcClassUtil.makeSrcClass(SrcClassUtil.java:156)
	at manifold.internal.javac.SrcClassUtil.makeStub(SrcClassUtil.java:81)
	at manifold.internal.javac.SrcClassUtil.makeStub(SrcClassUtil.java:75)
	at manifold.internal.javac.ClassSymbols.makeSrcClassStub(ClassSymbols.java:327)
	at manifold.internal.javac.ClassSymbols.makeSrcClassStub(ClassSymbols.java:307)
	at manifold.ext.ExtCodeGen.addExtensions(ExtCodeGen.java:259)
	at manifold.ext.ExtCodeGen.make(ExtCodeGen.java:99)
	at manifold.ext.ExtensionManifold.contribute(ExtensionManifold.java:360)
	at manifold.ext.ExtensionManifold.contribute(ExtensionManifold.java:54)

Removing the @Nullable annotation from the generic bound resolves the issue,