Failed to open extra directory of loaded image: Invalid parameter when chainloading UKI

[Mango]

Recently I setup a new boot environment with dracut instead of
mkinitcpio and made an united kernel image. When directly booting via
EFISTUB, all works perfectly and boots. However, when i try to
chainload it from GRUB, it takes approximately nine seconds and in
process the error message "Failed to open extra directory of loaded
image: Invalid parameter" is printed twice, after this, boot process
resumes normally.