This is really weird. Continuing with the example of dolphin:
apt install -V dolphin Reading package lists... Done Building dependency tree Reading state information... Done dolphin is already the newest version (4:20.08.2-1). 0 upgraded, 0 newly installed, 0 to remove and 182 not upgraded. But and apt full-upgrade want to uninstall a lot of packages, including dolphin, so I don't understand anything: apt full-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages were automatically installed and are no longer re quired: accountsservice akonadi-backend-mysql akonadi-contacts-data akonadi-mime-data akonadi-server apper-data appstream apt-config-icons apt-config-icons-hidpi apt-config-icons-large apt-config-icons-large-hidpi baloo-kf5 bluez-obexd breeze-cursor-theme breeze-gtk-theme cdparanoia cdrdao cracklib-runtime cups-pk-helper default-mysql-client-core default-mysql-server-core dnsmasq-base drkonqi dvd+rw-tools fonts-hack fonts-noto-hinted frameworkintegration freeglut3 gdal-data genisoimage geoclue-2.0 gir1.2-notify-0.7 gir1.2-packagekitglib-1.0 gir1.2-secret-1 growisofs ieee-data k3b-data kamera kate5-data kde-cli-tools-data kde-config-gtk-style kde-config-mailtransport kde-config-sddm kde-style-breeze kdeaccessibility kdepim-runtime kdepim-themeeditors kdeplasma-addons-data kf5-kdepim-apps-libs-data kf5-messagelib-data kgamma5 khotkeys khotkeys-data kimageformat-plugins kio-ldap kmag kmenuedit kmousetool kmouth kross ksysguard-data ksysguardd kuserfeedback-doc kwin-data kwin-style-breeze kwrited libaccounts-glib0 libaccounts-qt5-1 libaccountsservice0 libao-common libao4 libappstream4 libappstreamqt2 libarmadillo10 libaudio2 libbluetooth3 libboost-atomic1.71-dev libboost-atomic1.71.0 libboost-chrono1.71-dev libboost-container1.71-dev libboost-container1.71.0 libboost-context1.71-dev libboost-context1.71.0 libboost-coroutine1.71-dev libboost-coroutine1.71.0 libboost-date-time1.71-dev libboost-exception1.71-dev libboost-fiber1.71-dev libboost-fiber1.71.0 libboost-filesystem1.71-dev libboost-graph1.71-dev libboost-graph1.71.0 libboost-iostreams1.71-dev libboost-locale1.71-dev libboost-log1.71-dev libboost-log1.71.0 libboost-math1.71-dev libboost-math1.71.0 libboost-numpy1.71-dev libboost-numpy1.71.0 libboost-program-options1.71-dev libboost-python1.71-dev libboost-python1.71.0 libboost-random1.71-dev libboost-random1.71.0 libboost-regex1.71-dev libboost-serialization1.71-dev libboost-stacktrace1.71-dev libboost-stacktrace1.71.0 libboost-system1.71-dev libboost-system1.71.0 libboost-test1.71-dev libboost-test1.71.0 libboost-thread1.71-dev libboost-timer1.71-dev libboost-timer1.71.0 libboost-type-erasure1.71-dev libboost-type-erasure1.71.0 libboost-wave1.71-dev libboost-wave1.71.0 libboost1.71-dev libcharls2 libcppunit-1.15-0 libcppunit-dev libcrack2 libdap25 libdapclient6v5 libdmtx0b libdolphinvcs5 libepsilon1 libfakekey0 libfreexl1 libfyba0 libgdal27 libgeos-3.8.1 libgeos-c1v5 libgeotiff5 libglfw3 libglib2.0-bin libgmp-dev libgmpxx4ldbl libgnuradio-channels3.8.2 libgnuradio-dtv3.8.2 libgnuradio-fec3.8.2 libgnuradio-trellis3.8.2 libgnuradio-video-sdl3.8.2 libgnuradio-vocoder3.8.2 libgnuradio-wavelet3.8.2 libgnuradio-zeromq3.8.2 libgps26 libgsm1-dev libhdf4-0-alt libhdf5-hl-100 libibus-1.0-5 libical3 libiso9660-11 libjim0.79 libkaccounts2 libkdecorations2private6 libkf5akonadi-data libkf5akonadiagentbase5 libkf5akonadicalendar-data libkf5akonadicalendar5abi1 libkf5akonadicontact5 libkf5akonadicore5abi2 libkf5akonadimime5 libkf5akonadinotes5 libkf5akonadiprivate5abi2 libkf5akonadisearch-bin libkf5akonadisearch-data libkf5akonadisearchcore5 libkf5akonadisearchdebug5 libkf5akonadisearchpim5 libkf5akonadisearchxapian5 libkf5akonadiwidgets5abi1 libkf5alarmcalendar-data libkf5alarmcalendar5abi1 libkf5auth5 libkf5baloo5 libkf5balooengine5 libkf5baloowidgets-bin libkf5baloowidgets5 libkf5bluezqt-data libkf5bluezqt6 libkf5calendarcore5abi2 libkf5calendarevents5 libkf5calendarsupport-data libkf5calendarsupport5abi1 libkf5calendarutils5 libkf5cddb5 libkf5contacteditor5 libkf5contacts-data libkf5contacts5 libkf5dav-data libkf5dav5 libkf5declarative-data libkf5declarative5 libkf5emoticons-bin libkf5emoticons-data libkf5emoticons5 libkf5eventviews-data libkf5eventviews5abi1 libkf5grantleetheme-plugins libkf5grantleetheme5 libkf5gravatar-data libkf5gravatar5abi2 libkf5holidays-data libkf5holidays5 libkf5identitymanagement5 libkf5imap-data libkf5imap5 libkf5incidenceeditor-data libkf5itemmodels5 libkf5kaddressbookgrantlee5 libkf5kaddressbookimportexport5 libkf5kcmutils-data libkf5kdcraw5 libkf5kdelibs4support-data libkf5kdelibs4support5 libkf5kdelibs4support5-bin libkf5kexiv2-15.0.0 libkf5kipi-data libkf5kipi32.0.0 libkf5kmanagesieve5 libkf5konq6 libkf5kontactinterface-data libkf5kontactinterface5 libkf5krosscore5 libkf5krossui5 libkf5ksieve-data libkf5ksieve5 libkf5ksieveui5 libkf5ldap-data libkf5ldap5abi1 libkf5libkdepim-data libkf5libkdepim-plugins libkf5libkdepim5 libkf5libkleo-data libkf5libkleo5 libkf5mailcommon-data libkf5mailimporter5 libkf5mailimporterakonadi5 libkf5mailtransport-data libkf5mailtransport5 libkf5mailtransportakonadi5 libkf5mbox5 libkf5messagecore5abi1 libkf5messageviewer5abi1 libkf5mime-data libkf5mime5abi1 libkf5mimetreeparser5abi1 libkf5modemmanagerqt6 libkf5networkmanagerqt6 libkf5people-data libkf5people5 libkf5peoplebackend5 libkf5peoplewidgets5 libkf5pimcommon-data libkf5pimcommon5abi2 libkf5pimtextedit-data libkf5pimtextedit-plugins libkf5pimtextedit5abi2 libkf5prison5 libkf5pulseaudioqt2 libkf5purpose-bin libkf5purpose5 libkf5quickaddons5 libkf5screen-bin libkf5screen7 libkf5style5 libkf5su-bin libkf5su-data libkf5su5 libkf5syndication5abi1 libkf5sysguard-data libkf5templateparser5 libkf5tnef5 libkf5unitconversion-data libkf5unitconversion5 libkf5waylandserver5 libkf5webengineviewer5abi1 libkfontinst5 libkfontinstui5 libkgantt2 libkmlbase1 libkmldom1 libkmlengine1 libkolabxml1v5 libkpimgapi-data libkpimgapicalendar5 libkpimgapicontacts5 libkpimgapicore5abi1 libkpimgapitasks5 libkpimitinerary-data libkpimitinerary5 libkpimpkpass5 libkpimsmtp5abi1 libkuserfeedbackcore1 libkuserfeedbackwidgets1 libkwinglutils12 libkwinxrenderutils12 libkworkspace5-5 liblog4cpp5-dev libmbim-glib4 libmbim-proxy libminizip1 libmm-glib0 libmusicbrainz5cc2v5 libndp0 libnetcdf18 libnm0 libnotificationmanager1 libodbc1 libogdi4.1 libopenconnect5 libopengl0 libpackagekit-glib2-18 libpackagekitqt5-1 libperl4-corelibs-perl libphonenumber7 libplasma-geolocation-interface5 libpowerdevilcore2 libpowerdevilui5 libproj19 libprotobuf23 libpwquality-common libpwquality1 libqaccessibilityclient-qt5-0 libqalculate20 libqalculate20-data libqca-qt5-2 libqca-qt5-2-plugins libqgpgme7 libqmi-glib5 libqmi-proxy libqmobipocket2 libqrencode4 libqt5designer5 libqt5multimediaquick5 libqt5networkauth5 libqt5positioning5 libqt5quickparticles5 libqt5quickshapes5 libqt5quicktest5 libqt5quickwidgets5 libqt5script5 libqt5sensors5 libqt5virtualkeyboard5 libqt5webchannel5 libqt5webengine-data libqt5webengine5 libqt5webenginecore5 libqt5webenginewidgets5 libqt5webkit5 libqt5xmlpatterns5 libre2-8 libreadline5 libreoffice-kf5 libreoffice-qt5 librttopo1 libsasl2-modules-kdexoauth2 libscim8v5 libsignon-plugins-common1 libsignon-qt5-1 libspatialite7 libspectre1 libstemmer0d libstoken1 libsuperlu5 libtaskmanager6abi1 libteamdctl0 libthrift-dev libtomcrypt1 libtss2-esys0 libtss2-mu0 libtss2-sys1 liburiparser1 libvcdinfo0 libwoff1 libxcb-cursor0 libxcb-damage0 libxcb-dpms0 libxcb-record0 libxerces-c3.2 libzxingcore1 mariadb-client-core-10.3 mariadb-server-core-10.3 mobile-broadband-provider-info modemmanager network-manager odbcinst odbcinst1debian2 oxygen-sounds packagekit packagekit-tools pim-sieve-editor plasma-desktop-data plasma-discover-common plasma-workspace-data policykit-1-gnome powerdevil powerdevil-data proj-bin proj-data python3-click-plugins python3-cups python3-cupshelpers python3-gdal python3-mako python3-markupsafe python3-networkx python3-opengl python3-pydot python3-pygraphviz python3-pyqt5.sip python3-smbc python3-software-properties python3-thrift python3-zmq qdbus-qt5 qml-module-org-kde-activities qml-module-org-kde-bluezqt qml-module-org-kde-kholidays qml-module-org-kde-kquickcontrolsaddons qml-module-org-kde-people qml-module-org-kde-qqc2desktopstyle qml-module-org-kde-solid qml-module-org-kde-userfeedback qml-module-qt-labs-folderlistmodel qml-module-qt-labs-settings qml-module-qtmultimedia qml-module-qtquick-dialogs qml-module-qtquick-particles2 qml-module-qtquick-privatewidgets qml-module-qtquick-virtualkeyboard qml-module-qtwebengine qml-module-qtwebkit qtdeclarative5-dev-tools signon-plugin-oauth2 software-properties-common system-config-printer-common system-config-printer-udev thrift-compiler tpm-udev uhd-host usb-modeswitch usb-modeswitch-data user-manager vcdimager wodim Use 'apt autoremove' to remove them. The following packages will be REMOVED: accountwizard akregator apper bluedevil breeze dolphin fs-uae-launcher gnuradio gnuradio-dev gr-fosphor gwenview k3b k3b-i18n kaccounts-providers kaddressbook kate kde-baseapps kde-cli-tools kde-config-screenlocker kde-plasma-desktop kde-spectacle kde-standard kde-style-oxygen-qt5 kdeconnect kdepim-addons kinfocenter kmail knotes konq-plugins konqueror korganizer kpackagelauncherqml kscreen ksysguard kwin-common kwin-x11 libcolorcorrect5 libgnuradio-fosphor3.8.0 libgnuradio-qtgui3.8.2 libk3b7 libk3b7-extracodecs libkf5akonadisearch-plugins libkf5incidenceeditor5abi1 libkf5kcmutils5 libkf5mailcommon5abi2 libkf5messagecomposer5abi1 libkf5messagelist5abi1 libkf5pimcommonakonadi5abi1 libkf5plasma5 libkf5plasmaquick5 libkf5runner5 libkf5sysguard-bin libkpimimportwizard5 libkscreenlocker5 libksgrd7 libksignalplotter7 libkwin4-effect-builtins1 libkwineffects12 libprocesscore7 libprocessui7 libqt5quick5 libqwt-qt5-6 libweather-ion7 mbox-importer milou okular pim-data-exporter plasma-dataengines-addons plasma-desktop plasma-discover plasma-framework plasma-integration plasma-nm plasma-pa plasma-runners-addons plasma-theme-oxygen plasma-wallpapers-addons plasma-widgets-addons plasma-workspace print-manager pyqt5-dev-tools python3-pyqt5 python3-pyqt5.qtopengl python3-pyqt5.qwt python3-pyqtgraph qml-module-org-kde-draganddrop qml-module-org-kde-kcm qml-module-org-kde-kconfig qml-module-org-kde-kcoreaddons qml-module-org-kde-kio qml-module-org-kde-kquickcontrols qml-module-org-kde-kwindowsystem qml-module-org-kde-purpose qml-module-org-kde-runnermodel qt5-default qtdeclarative5-dev qtgstreamer-plugins-qt5 sddm-theme-breeze sddm-theme-debian-breeze software-properties-kde systemsettings task-kde-desktop virtualbox-qt The following NEW packages will be installed: libkdecorations2private7 libqt5quick5-gles The following packages will be upgraded: akonadi-server breeze-cursor-theme drkonqi gqrx-sdr kactivitymanagerd kde-cli-tools-data kde-config-gtk-style kde-config-sddm kde-style-breeze kdeplasma-addons-data kgamma5 khotkeys khotkeys-data kmenuedit ksshaskpass ksysguard-data ksysguardd kwayland-integration kwin-data kwin-decoration-oxygen kwin-style-breeze kwrited libkaccounts2 libkdecorations2-5v5 libkf5akonadiagentbase5 libkf5akonadicore5abi2 libkf5akonadiprivate5abi2 libkf5akonadiwidgets5abi1 libkf5screen-bin libkf5screen7 libkf5sysguard-data libkf5xmlgui-bin libkf5xmlgui5 libkfontinst5 libkfontinstui5 libkwinglutils12 libkwinxrenderutils12 libkworkspace5-5 libnotificationmanager1 libokular5core9 liboxygenstyle5-5 liboxygenstyleconfig5-5 libplasma-geolocation-interface5 libpoppler-cpp0v5 libpoppler-glib8 libpoppler-glib8:i386 libpoppler-qt5-1 libpoppler102 libpoppler102:i386 libpowerdevilcore2 libpowerdevilui5 libqcustomplot2.0 libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5designer5 libqt5gui5 libqt5help5 libqt5multimedia5 libqt5multimedia5-plugins libqt5multimediagsttools5 libqt5multimediaquick5 libqt5multimediawidgets5 libqt5network5 libqt5networkauth5 libqt5opengl5 libqt5opengl5-dev libqt5positioning5 libqt5printsupport5 libqt5qml5 libqt5qmlmodels5 libqt5qmlworkerscript5 libqt5quickcontrols2-5 libqt5quickparticles5 libqt5quickshapes5 libqt5quicktemplates2-5 libqt5quicktest5 libqt5quickwidgets5 libqt5script5 libqt5sensors5 libqt5serialport5 libqt5sql5 libqt5sql5-mysql libqt5sql5-sqlite libqt5svg5 libqt5test5 libqt5texttospeech5 libqt5virtualkeyboard5 libqt5waylandclient5 libqt5waylandcompositor5 libqt5webchannel5 libqt5webengine-data libqt5webengine5 libqt5webenginecore5 libqt5webenginewidgets5 libqt5webkit5 libqt5websockets5 libqt5widgets5 libqt5x11extras5 libqt5xml5 libqt5xmlpatterns5 libsignon-plugins-common1 libsignon-qt5-1 libtaskmanager6abi1 okular-extra-backends oxygen-sounds plasma-desktop-data plasma-discover-common polkit-kde-agent-1 poppler-utils powerdevil powerdevil-data qdbus-qt5 qml-module-qt-labs-folderlistmodel qml-module-qt-labs-settings qml-module-qtgraphicaleffects qml-module-qtmultimedia qml-module-qtqml qml-module-qtqml-models2 qml-module-qtquick-controls qml-module-qtquick-controls2 qml-module-qtquick-dialogs qml-module-qtquick-layouts qml-module-qtquick-particles2 qml-module-qtquick-privatewidgets qml-module-qtquick-templates2 qml-module-qtquick-virtualkeyboard qml-module-qtquick-window2 qml-module-qtquick2 qml-module-qtwebengine qml-module-qtwebkit qt5-gtk-platformtheme qt5-image-formats-plugins qt5-qmake qt5-qmake-bin qt5-qmltooling-plugins qtbase5-dev qtbase5-dev-tools qtdeclarative5-dev-tools qtspeech5-flite-plugin qtwayland5 sddm sddm-theme-debian-maui user-manager 144 upgraded, 2 newly installed, 103 to remove and 0 not upgraded. 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