Responsive Menu for blog posts

Hi, I know there is a problem with tinynav when displaying search results, it displays the last menu item as the currently selected item, regardless of what was selected before the search. My testing found that this was also the case when clicking on a blog category or tag to display a list of blog entries with the same category/tag. I could live with this (just), but today I found that when you select a blog post the same thing happens, the last menu item is displayed and not the true currently selected item. I thought it might be my template, but I tested it on your demo website with the same result. Note, the problem does not occur with pages, only posts. Is this something that can be fixed? Otherwise it will be show stopper for me as the main purpose of the website is to display blog posts and I can't have it displaying the wrong menu item with the posts. Regards, Robertf