Interesting, if it doesn't break current compatibility with original screens you can send me the needed commits and I may try to merge them in official orangefox.Hello, I had the same problem as you. I changed the screen of the Mi Mix 2 and the recovery did not appear, only the gray screen was visible.
I have been testing and managed to adapt the latest TWRP and Orange Fox for "ebbg" screens.
I have tested it on my terminal and it works, install the latest rom of Xiaomi.eu without problems.
If you are interested in trying it, I can pass you a link to download it.
TWRP 18.104.22.168 Ebbg : https://mega.nz/file/sz4Hhaza#SpK6o2bKnlRWISLOX0Nj7dwFp_QruFekoaFxz9eISQw
Orange Fox R10.1_1_Ebbg: https://mega.nz/file/c7oBCAhQ#mpCFVrM9-O7E5en2yQ_dVUAJFXaa18fAIqEDheULVKk