Twttr.widgets.load(); not working as expected


I am loading a tweet button via ajax and after loading run twttr.widgets.load(); to render the button.
The problem is, that the text/url parameter are not updated as expected. Resources&url=

As you can see the original_referer value has the updated value, but text/url never change after the initial page load.
I was expecting, that the values would be reloaded from title/url each time twttr.widgets.load(); is run.
Any ideas?