Hello.
After one of the recent updates to nightly build,
my guess https://archive.coreelec.org/Amlogic-no/CE-22/20260508/changelog-20260508.html
the mount on NTFS formatted external USB drive is not possible. Only exFAT or FAT.
If I try to mount manually, the error will come
FUSE exfat 1.2.8
ERROR: exFAT file system is not found.
There were several changes related to NTFS in that build and upwards. Please check / confirm.