Search among installed applications
Gnome-software distinguishes in its interface between "all" and "installed" applications.
Case 1 ) I click "all", then start to search. Effect: I am shown a list of installable applications corresponding to my search term.
Case 2 ) I click "installed", then start to search. Effect: Gnome software shows me a list of installable applications as in Case 1) - and not a list of the installed applications.
Browsing the installed applications and starting to search should result in a list of the installed, and not in a list of installable applications
Sorting applications in folders in the overview would be more easy, when a search of installed applications is available.