Use case: a data item with parent / child relationship. One item has a subitem of the same data type.
So, on the Item detail screen we see a child Item as a link - but I’m unable to link to same page via UI. Link action does not show current screen that I’m editing as an option to select from.
Other use case might be: “Related items” that are the same item type as the current item.
This is not a bug. Adalo just does not work like e.g. PowerApps. I recommend you have a look into Getting Started - Adalo Resources videos to see how data and screens are connected.
There is no ThisItem in a list that you can reference in a second list.
There is a Current record that is passed to the next screen.