Small bug in the installer of Manjaro KDE 23.1.1

I am using manual partitioning.

There is the need of an EFI partition to start the system.
I setup a 300 MB FAT32 at the beginning of the SSD.
The installer did not create the partition correctly.
After deleting and new-creating the EFI (FAT32) partition, the installation completed successfully and the system started.

What was wrong?

The FAT32 partition was not setup as EFI partition and the installer could not detect the partition as EFI partition.

Did you set the boot flag on the partition in the installer?

I set the boot flag during partitioning.

and esp ?

The only other boot flag is bios-grub.

I could not set the esp flag, because it was not in the list (of flags).