Article routePath with type page_tree_route does not show right url

[Quehnie]

Q	A
Bug?	Yes
New Feature?	no
SuluArticleBundle Version	2.5.1

Actual Behavior

If you save an article with the name "Test" and a page "test-overview" it creates the whole url with "/test-overview/test", if you do exactly the same again it saves the new article under "/test-overview/test-1" but shows "/test-overview/test" in sulu because of a wrong suffix.

Expected Behavior

Also add the right suffix into the data

Steps to Reproduce

See "Actual Behavior"

Possible Solutions