So in the default item menu we have actions called "Glue items" and "Glue Items within time selection".
When going to the actions window though...
The item called "Glue items within time selection" is called "Glue items"!
For the action that's called "Glue items" in the item menu, you need to select "Glue items, ignoring time selection".
That's rather confusing when trying to re-adjust menus