Runout detection works if you print from Luban over wifi and if you print from Touchscreen.
My last attempt was to call the endstop status every new layer in octoprint and search the terminal for runout or something but this ended in stuttering (even on a raspberry 5).
It needs a firmware change…
A feature request would help,
Email support@snapmaker.com or open a ticket:
https://snapmaker.formcrafts.com/support-ticket