Although there is only minimal grief with this bug currently, it will break the majority of mob farms and will precipitate a sizable uproar if it survives to the final release. Imagine players opening their worlds in 1.13 to find every mob farm/item transport broken with little to no notice beforehand. I would advise carefully weighing the worth of slightly more realistic fluid mechanics against the numerous headaches and agitation this will create.
Although there is only minimal grief with this bug currently, it will break the majority of mob farms and will precipitate a sizable uproar if it survives to the final release. Imagine players opening their worlds in 1.13 to find every mob farm/item transport broken with little to no notice beforehand. I would advise carefully weighing the worth of slightly more realistic fluid mechanics against the numerous headaches and agitation this will create.