System boots to GRUB CLI twice

[gsdsam]

About two weeks ago I upgraded from Kubuntu 25.04 to Kubuntu 25.10 which other than this issue has been fine: when I boot my system it enters the GRUB command line instead of launching straight into Kubuntu as it had done previously. I can still access my system by entering "exit" on the GRUB CLI, but I'd like to put it back to normal. Unfortunately I foolishly tried to fix it myself using Boot-Repair which has only compounded the issue with the GRUB CLI appearing twice requiring two "exit" commands followed by a Ubuntu (Non-KDE) logo on the boot screen - the system does still run as normal however. Hopefully my shaky (apologies) video below helps.



1) Please include the following information in your posts:

• Version/release of Kubuntu: 25.10
• Kubuntu is installed on my SSD
• It is the only OS on this drive. I have Windows installed on another drive but not in a dual boot fashion - I have to use the BIOS to select an alternate boot device for it.
• The version of KDE Plasma installed: 6.4.5

2) Information about your PC:

System:
  Host: kdt Kernel: 6.17.0-8-generic arch: x86_64 bits: 64
  Desktop: KDE Plasma v: 6.4.5 Distro: Kubuntu 25.10 (Questing Quokka)
Machine:
  Type: Desktop Mobo: ASRock model: B760M PG Lightning
    serial: <superuser required> UEFI: American Megatrends LLC. v: 1.04
    date: 04/26/2023
CPU:
  Info: 10-core (6-mt/4-st) model: 12th Gen Intel Core i5-12600KF bits: 64
    type: MST AMCP cache: L2: 9.5 MiB
  Speed (MHz): avg: 799 min/max: 800/4900:3600 cores: 1: 799 2: 799 3: 799
    4: 799 5: 799 6: 799 7: 799 8: 799 9: 799 10: 799 11: 799 12: 799 13: 799
    14: 799 15: 799 16: 799
Graphics:
  Device-1: Advanced Micro Devices [AMD/ATI] Navi 23 [Radeon RX 6650 XT /
    6700S 6800S] driver: amdgpu v: 6.16.6
  Display: wayland server: X.org v: 1.21.1.18 with: Xwayland v: 24.1.6
    compositor: kwin_wayland driver: X: loaded: amdgpu
    unloaded: fbdev,modesetting,radeon,vesa dri: radeonsi gpu: amdgpu
    resolution: 1: 1600x900~60Hz 2: 1920x1080~180Hz
  API: EGL v: 1.5 drivers: kms_swrast,radeonsi,swrast
    platforms: gbm,wayland,x11,surfaceless,device
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.3.0-devel
    renderer: AMD Radeon RX 6650 XT (radeonsi navi23 LLVM 20.1.8 DRM 3.64
    6.17.0-8-generic)
  API: Vulkan v: 1.4.321 drivers: radv,llvmpipe surfaces: xcb,xlib,wayland
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor wl: wayland-info x11: xdriinfo,
    xdpyinfo, xprop, xrandr
Audio:
  Device-1: Intel Raptor Lake High Definition Audio driver: snd_hda_intel
  Device-2: Advanced Micro Devices [AMD/ATI] Navi 21/23 HDMI/DP Audio
    driver: snd_hda_intel
  Device-3: C-Media Blue Snowball driver: hid-generic,snd-usb-audio,usbhid
    type: USB
  Device-4: FiiO K11 driver: hid-generic,snd-usb-audio,usbhid type: USB
  API: ALSA v: k6.17.0-8-generic status: kernel-api
  Server-1: PipeWire v: 1.4.7 status: active
Network:
  Device-1: Realtek RTL8125 2.5GbE driver: r8169
  IF: enp5s0 state: up speed: 1000 Mbps duplex: full mac: 9c:6b:00:20:14:27
  IF-ID-1: br-fec93cdd5a50 state: up speed: 10000 Mbps duplex: unknown
    mac: 36:49:b5:7d:e8:18
  IF-ID-2: docker0 state: down mac: 82:10:b2:91:5c:25
  IF-ID-3: veth3342471 state: up speed: 10000 Mbps duplex: full
    mac: c6:3f:5a:63:c3:10
Bluetooth:
  Device-1: Cambridge Silicon Radio Bluetooth Dongle (HCI mode) driver: btusb
    type: USB
  Report: hciconfig ID: hci0 state: up address: 00:1A:7D:DA:71:15 bt-v: 4.0
Drives:
  Local Storage: total: 3.88 TiB used: 1.85 TiB (47.6%)
  ID-1: /dev/nvme0n1 vendor: Western Digital model: WD BLACK SN850X 2000GB
    size: 1.82 TiB
  ID-2: /dev/sda vendor: Kingston model: SV300S37A240G size: 223.57 GiB
  ID-3: /dev/sdb vendor: Apacer model: APS-SL3N-1T size: 953.87 GiB
  ID-4: /dev/sdc vendor: Toshiba model: MQ01ABD100 size: 931.51 GiB
    type: USB
Partition:
  ID-1: / size: 109.44 GiB used: 44.1 GiB (40.3%) fs: ext4 dev: /dev/nvme0n1p2
  ID-2: /boot/efi size: 299.4 MiB used: 10.7 MiB (3.6%) fs: vfat
    dev: /dev/nvme0n1p1
  ID-3: /home size: 1.67 TiB used: 1001.16 GiB (58.6%) fs: ext4
    dev: /dev/nvme0n1p4
Swap:
  ID-1: swap-1 type: file size: 512 MiB used: 68 KiB (0.0%) file: /swapfile
  ID-2: swap-2 type: partition size: 14.9 GiB used: 0 KiB (0.0%)
    dev: /dev/nvme0n1p3
Sensors:
  System Temperatures: cpu: 40.0 C mobo: N/A gpu: amdgpu temp: 55.0 C
  Fan Speeds (rpm): N/A gpu: amdgpu fan: 0
Info:
  Memory: total: 48 GiB note: est. available: 46.76 GiB used: 6.23 GiB (13.3%)
  Processes: 413 Uptime: 1h 13m Shell: Bash inxi: 3.3.39

Many thanks in advance!