DateTime issue: time is different by 1 second on usb stick

[ebolax]

I recently copy some files to my usb stick and some files' time is different by 1 second. Is it normal?

Image: https://ebolax.org/test/clip.jpg

[Gral]

Your flash drive is FAT32 formatted. FAT and FAT32 uses 2 second precision for files modification time so it's always rounded to even seconds.
No bug, normal NTFS -> FAT copy behaviour