Trying to install and the partition manager is showing:
Unable to read the contents of this file system!
Because of this some operations may be unavailable.
The cause might be a missing software package.
The following list of software packages is required for fat32 file system support: dosfstools, mtools.
Indeed, that is why I brought it to your attention. It seems there’s a problem if the installer lacks these tools. This is in the latest and previous builds: