can't mount msdos partition

From: hlyg <hlyg2023_at_outlook.com>
Date: Sat, 08 Feb 2025 06:02:59 UTC
both 13.4 and 14.1 fail to mount it though linux can mount it as vfat 
partition

root@bsd:~ # gpart show da0
=>      34  60628925  da0  GPT  (29G)
         34         6       - free -  (3.0K)
         40    532480    1  efi  (260M)
     532520  28827648    2  freebsd-ufs  (14G)
   29360168   1572864    3  freebsd-swap  (768M)
   30933032    526296       - free -  (257M)
   31459328  29167616    4  ms-basic-data  (14G)
   60626944      2015       - free -  (1.0M)

root@bsd:~ # ls /mnt/dos/
root@bsd:~ # mount_msdosfs /dev/da0p4 /mnt/dos/
mount_msdosfs: /dev/da0p4: Invalid argument