Magisk 27 not working
This does install, and go through the motions, I've used it to move data from OBB internal to external, and there's no errors in the logs. But the actual forwarding doesn't happen. The data remains on the internal SD and External, but the intSD data is still used.
LineageOS 21/LOS20 & magisk 27
Did u find a fix for this
works just fine with a similar setup LineageOS 21 & Magisk Canary (27007)
Not sure if you maybe found it already by yourself, but you will find newer builds, where fbind is even working on A14 here on telegram.
if from_to and .fbind directory still produces duplicate folders on int/ext try using /mnt/pass_through/0/ directories
ex: (google messages picture download folder "/storage/emulated/0/pictures/messages")
"bind_mount /storage/SD_cardID/pictures/phone/messages /mnt/pass_through/0/emulated/0/pictures/messages"