static inline int zend_list_do_delete(HashTable *list,int id)
{
	zend_rsrc_list_entry *le;
	ELS_FETCH();
	
	if (zend_hash_index_find(&EG(regular_list), id, (void **) &le)==SUCCESS) {
/*		printf("del(%d): %d->%d\n", id, le->refcount, le->refcount-1); */
		if (--le->refcount<=0) {
			return zend_hash_index_del(&EG(regular_list), id);
		} else {
			return SUCCESS;
		}
	} else {
		return FAILURE;
	}
}


In the above function from zend_list.c, as you can see that it is passed a HashTable *list parameter to delete the entry from, but when it calls the hash find and delete functions, it DOES NOT use the parameters HashTable * list which is passed in.  Instead it passes &EG(regular_list), so even if call zend_plist_delete(...) to try to delete something from the persistent list, it'll try to delete it from the regular list.

NOTE: I checked the 4.0.5 release and it has the same problem.