Go to {nav Browse} with a few images in it, enable the Sidebar ({key F4}) and select the {nav Operations} tab.
No amount of selecting/deselecting, and right clicking should result in a state where an image is selected but
the operations are greyed out (toolbar) or missing (sidebar and context menu).
In particular, starting with nothing selected, right clicking an image should select that image and display the
full context menu with all operations. The toolbar and {nav Operations} tab in the sidebar should also reflect the
correct available operations for that image.