[Flow] Route part cache not cleared?

[Christian Eßl]

I have a simple Route-setting like this:

  name: 'Page'
  uriPattern:    '{page}' 
  routeParts:       
    page:     
      objectType: 'Foo\Bar\Domain\Model\Page'
      uriPattern: '{title}'      

which creates urls like "http://foobar.de/mypagetitle"

So far working as expected.

But when I change the title of my Page-Object, the {title} of the cached route part won't get updated. Even if I manually clear the cache.

- I already cleared the whole Temporary/-folder, but TYPO3 Flow still creates the cached route parts with the old title
- I checked the objects title in the database. - The title was changed indeed. 
I don't understand why TYPO3 Flow caches the old title.
Does the url part caching work somehow differently? Are there some caches in action, that are located outside the Data/Temporary/-folder?

I am currently in Development-Context.

What could cause such a behavior?