Android FunctionFS ADB device only exists in recovery

I'm creating a device tree for the Motorola Moto G50. The device uses DWC3 USB controller. In AOSP recovery, ADB over USB works, and adb (device? gadget?) is mounted correctly: # mount adb on /dev/usb-ffs/adb type functionfs (rw,relatime) This mount is done by the Android init system in the on fs trigger: on fs mkdir /dev/usb-ffs 0775 shell shell mkdir /dev/usb-ffs/adb 0770 shell shell mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000 However, similar init commands (taken from the device's stock init scripts) when booting into the system: mkdir /dev/usb-ffs 0775 shell system mkdir /dev/usb-ffs/adb 0770 shell system mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=1000,rmode=0770,fmode=0660 results in this error: [ 36.024282] init: Command 'mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=1000,rmode=0770,fmode=0660' action=boot (/vendor/etc/init/hw/init.qcom.rc:34) took 0ms and failed: mount() failed: No such device