Hello,
I've just tried with a Redmi 9A dandelion, OFox 11.1 and ArrowOS 13 : the installation process is broken, but at the end it works :
The installation process works until adb shell twrp wipe dalvik : the command is sent just after the recovery has rebooted (OFox reboots after sideload), and nothing appends... Maybe the command is sent to quickly?
So I disconnected the cable, then pluged it again, and the next command was sent (wipe cache). At this moment, the recovery came back into sideload mode (the trick may not have worked) and get stucks there.
I just force-rebooted the phone, and the new ROM started. So it works, but not ready for end user ^^

Logs if needed :
openandroidinstaller.log

EDIT : I'm sorry, but I don't have the time to investigate, very busy these times...