Always executing first action if "Display operations as" = "Each action as a separate button"

I created a view which retrieves nodes of certain type and configured the style option to be Bulk Operations.
VBO Context Menu is enabled and I configured several actions for each node (see image view_configuration.jpg). The view used for this test was "admin_content"

The important configuration item:
Display operations as => Each action as a separate button.

When I browse the view and for one (or multiple) nodes select "delete node", it tries to execute the "update url alias". As far as I can see, it always execute the first option available only if Display operations as: is set to Each action as a separate button. Otherwise it works ok.

Versions:
drupal 6.19
views: 6.x-2.11
vbo context menu: 6.x-1.2
Views Bulk Operations: 6.x-1.10
Jquery Context Menu: 1.01
Browser: FF 3.6.12