[Pre-Install] Upgrade tries to remove essential apps like Konsole and Dolphin

[GGKazz]

Hello all,
I'm trying to upgrade from Kubuntu 25.10 to 26.04 LTS however the upgrade removes all kinds of essential apps like Konsole or Dolphin.

Remove (was auto installed) apport-core-dump-handler dolphin
  dolphin-plugins elisa gwenview haruna kate kde-spectacle kdeconnect
  konsole konsole-kpart libasound2-plugins
  libgstreamer-plugins-good1.0-0 libgusb2 libgvc6 libk3b-extracodecs
  libkf6texteditor-katepart libonnxruntime1.21 libplasma6
  libplasmaquick6 libqt6multimediawidgets6 libreoffice-kf6
  libreoffice-qt6 mesa-va-drivers mesa-va-drivers:i386
  mesa-vdpau-drivers mesa-vdpau-drivers:i386 neochat okular
  packagekit-tools phonon4qt5-backend-vlc phonon4qt5settings
  plasma-widgets-addons python3-fuse python3-sip
  qml6-module-org-kde-kirigamiaddons-labs-components
  qml6-module-qttexttospeech qt6-speech-speechd-plugin
  sddm-theme-breeze xwaylandvideobridge

A few weeks ago I did the upgrade and did not pay enough attention so after the upgrade I couldn't access my files or open de terminal. I figured I'd try again later so I reverted back using Timeshift. But now I have to upgrade in a few days so I'd like to be able to resolve the issue.

My system information:

OS: Kubuntu 25.10 (Questing Quokka) x86_64
Host: B850M GAMING X WIFI6E (Default string-CF-WCP-ADO)
Kernel: Linux 6.17.0-40-generic
Uptime: 1 hour
Packages: 2610 (dpkg), 6 (flatpak), 14 (snap)
Shell: bash 5.2.37
Display (Q27P1B): 2560x1440 @ 60 Hz in 27" [External]
Display (LG ULTRAGEAR): 2560x1440 @ 180 Hz in 27" [External, HDR] *
DE: KDE Plasma 6.4.5
WM: KWin (Wayland)
WM Theme: Breeze
Theme: Breeze (Light) [Qt], Breeze [GTK2/3]
Icons: Papirus-Dark [Qt], Papirus-Dark [GTK2/3/4]
Font: Noto Sans (10pt) [Qt], Noto Sans (10pt) [GTK2/3/4]
Cursor: breeze (24px)
Terminal: konsole 25.8.1
CPU: AMD Ryzen 7 9800X3D (16) @ 5.27 GHz
GPU: AMD Radeon RX 9070 XT [Discrete]
Memory: 3.79 GiB / 30.96 GiB (12%)
Swap: 0 B / 512.00 MiB (0%)
Disk (/): 561.59 GiB / 1.79 TiB (31%) - ext4

Let me know if you need any more information. Thank you.

[claydoh]

How are you launching the upgrade?

Are you fully updated before starting?

Do

sudo apt update

and

sudo apt upgrade

show any warnings or error messages?

Any PPAs added?