If specifyiing a custom tree config with a setPath(), the tree does not function properly. Trying to expand subitems causes weird behaviour...

Steps to reproduce (thanks to Gregory):

1) Create a new tree configuration class:
public class MyTreeConfiguration extends WebsiteTreeConfiguration {
public void prepareTree(Tree tree, boolean browseMode, HttpServletRequest request)

}
Deploy that class in magnolia.

2) Reference the configuration in a new tree definition:
.../my-new-tree/configurationClass : info.magnolia.test.
MyTreeConfiguration

3) Finally, setup my dialog's link control with a "tree" property set to the newly created Tree ("my-new-tree")