Selections committed with: [x] Tab [ ] Enter [ ] Any character not valid in a symbol
In Visual Studio the intellisense setting "committed by pressing space bar" is deactivated.
As long as Visual Assist is enabled, statements are completed when pressing the space bar (this is driving me insane). When I disable VAX everything works fine and statements are only completed when I press Tab.
Listbox settings in VA Options are applies only to suggestion listboxes. These are VA's best guess at what you might be typing. Member listboxes appear after typing a dot or -> and list the class members.
About "committed by pressing space bar": I am seeing the same effect here: