Same. Was working on 12.0. 12.2.1 starting having issues.
I have Libreelec on a ASUS NUC connected to port 1 of my tuner, then port 2 (eARC) of an LG. I set the "Connected to HDMI Device" option to "Amplifier / AVR device" and everything works, but on next reboot it gets reset to "TV" and subsequent reboots then try to change the TV's HDMI port to port 1.
It will also try to change the port on the TV to 1 whenever I start to play a video, so I have to change the setting back every time it starts up.
Latest nightly seems to boot past the splash screen. LibreELEC-Generic.x86_64-13.0-nightly-20241020-ce869d0.img.gz
I'll be testing this out. This may be resolved 
Gets stuck on the "Just enough os for kodi" screen.
LibreELEC (official): 12.0.1
Tried with Live USB and installed to internal nvme.
Installed via LibreELEC USB-SD Creator on mac Using the Generic x86_64 image.
Also tried via gunzip | dd from PopOS to create the USB.
Same problems.
My guess is 14th gen intel is not supported?
Here's the device
ASUS NUC 14 Pro - Tech Specs｜NUCs｜ASUS USA
and CPU
https://www.intel.com/content/www/us/en/products/sku/236776/intel-core-3-processor-100u-10m-cache-up-to-4-70-ghz/specifications.html
Thanks
