When I installed windows11 on the first disk and Ubuntu on the second disk, the bootloader installation location was not the location I chose.
The partition table for my two disks is:Installation information，Installation information
The second disk has three partitions, of which /dev/sda3 is the efi partition, and I chose /dev/sda3 to install the bootloader.However, after entering the system, I found that the bootloader was installed in the efi partition of the disk where the Windows system was located./dev/nvme0n1p1 is mounted in /dev/efi.And thers is nothing in /dev/sda3.Windows system disk,enter image description here.

I want to know what caused this situation.