Different device but i have the same issue with my Xiaomi 14 when i am on Magisk 30/30.1
Why would you go back to 28104 though? is there a specific reason? doesnt the stable Magisk 29.0 (29000) work for you?
oh.. got all the info for now.
you went from xiaomi.eu_SHENNONG_OS1.0.24.5.6.DEV_14 (Weekly Dev rom and also kind of unstable due to the cutting edge features) to the latest stable version xiaomi.eu_SHENNONG_OS2.0.206.0.VNBCNXM_15.
there was the time when you couldnt go from DEV to stable until...