I have a data grid with items that have an attribute which contains a link to an external location.
On the data grid I have an action button to open a link. I select the attribute that contains the link. Now, whenever I execute this button (double-click, single click, select and click button) I get redirect to <currentlocation>/null.
I double checked, triple checked if the attribute has the correct value. In the end I had to use the URL redirector widget to make this work (using the same attribute: works like a charm).