RemoteCacheManager manager = ...;
Cache noReturnCache = manager.getCache("foo", false);
Cache returnValueCache = manager.getCache("foo", true);

The second returned cache will use forceReturnValue=false, although it was retrieved with forceReturnValue=true. The reason is that caches are stored in a map by name, ignoring this flag.

There should be two such maps. The question is what should getCache("foo") return if previously only getCache("foo", true) was called.