When I search a package and install it, after it has been installed the list of packages it not the same. See the video. Reproducible: Always
I see what you mean, and it behaves the same way on my Ubuntu 13.10 with muon 2.1.3. But this is not strictly a bug. Let me explain: When you are typing in a search, the results are displayed in descending order of relevance so things are easy to find. The sort order (e.g. by name or installed) is ignored until you click on the table headings again. What's happening after you do your installation is that it's simply applying the sort order it had previously ignored. The results in your video are the same packages - they're just in alphabetical order now.
I see. But this is not intuitive. For example I enter a package name to search for and I am scrolling the search results. Then I found a package and installed it. I would like to continue looking through the packages, but the order has changed. Why after the packages are installed the sorting order is changing? If I am showed the same search results window, why the results are not sorted by relevance again? Also when search results are shown ordered by relevance, the sorting order mark on the "Name" header suggests that the results are sorted by name which is not true -- which is confusing. What about having another column containing relevance or package popularity, whose header will be marked when the results are sorted by relevance? Also it would be nice to restore scroll position when the requested packages were installed.
I'm running into a worse version of this issue: I can't find any packages after installing one. https://streamable.com/9g2kz $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.3 LTS Release: 16.04 Codename: xenial $ muon --version muon 5.6.0
Muon is no longer maintained, please switch no a supported alternative like https://apps.kde.org/discover/ or the package manager native no your system. Sorry for the inconvenience.