I had added the radnavigation to a masterpage. Everything works well if there is no ajax postback in pages.. When you make a ajax postback with ajaxmanagerproxy in a page, the navigation locks and can't use.. Only nodes without subitems can be clickable...
For your convenience I have attached my test files.
If your scenario is different please modify them so that they start to exhibit the issue and send them back for examination.
Regards,
Rumen
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