I think its somewhat dependent on the height at which you are placing the flowing block. I checked several times and found that below y=0 most of the time they are not updating. But when I am placing the block close to the surface it is flowing and also updating as I go on digging till bedrock.
I think its somewhat dependent on the height at which you are placing the flowing block. I checked several times and found that below y=0 most of the time they are not updating. But when I am placing the block close to the surface it is flowing and also updating as I go on digging till bedrock.