I recently mounted a new FAT32 HDD to my desktop (Ubuntu 18.04). After initially partitioning the drive I wanted to partition a larger space but realized that my GNOME disks management utility window is frozen when it loads and does not allow me to use any of the options or diagnostics without freezing. Output of fdisk -l on mounted drive can be viewed below. Although probably irrelevant, I also added an image of the disk management window. The freezing occurs once I try to resize the window or press any menu option. Also I am unable to check on the 2TB drive. Hopefully I can get some leads on how to fix this issue, Thanks.
[UPDATE] This problem actually is not local to just the gnome-disks utility but to any gnome related window. My files window and help center window also freeze.
FAT32 max partition size - 2TB says https://www.partitionwizard.com/partitionmanager/fat32-partition-size-limit.html
FAT32 is not recommended for use with large drives, since Ubuntu can easily and reliably access NTFS partitions. If al all possible, I'd suggest making that drive NTFS is sharing drives with Windows is your concern.
If Windows is not in use, ext4 is the popular choice for Ubuntu since it's faster than NTFS but has the journaling which protects you against power failure during a write operation