Opencore and BTRFS driver to boot Linux

Hello!

Anyone got the btrfs_x64 driver working on OC? I was booting linux with ext4 through opencore without any issue and with ext4de driver, but now I changed my linux installation to BTRFS filesystem and I can't make Opencore see my installation. I have Mac on a nvme disk and the fat32 efi partition in it. Linux is on another SSD disk. I only can boot to Linux through BIOS. I tried to point the efi/ubuntu/grubx64.efi in my config.plist but no deal. I did create an entrie using efibootmgr info, but when I select the Ubuntu it just goes black and return to the picker screen.

What am I missing?