Cannot reopen last document when it is already selected in the sidebar

[jeremypw]

Steps to Reproduce

1. Close all documents but have a project folder open
2. Click on a (non-selected) item in the sidebar - document opens
3. Close the document using the notebook tab - corresponding item remains selected in sidebar
4. Click on the selected sidebar item - nothing happens

Expected Behavior

Clicking on a sidebar item should always open the document if it is not already opened, even if the item is already selected (and/or on closing a document its bookmark should always be deselected).

Logs

Platform Information

Elementary 6.0 daily