Last modified: 2013-11-13 18:18:37 UTC
Flow should trim off any blank lines at the bottom of a post. It currently doesn't, leading to: any carriage-return at the end of my last line will increase the whitespace underneath my post. (adding dozens of blank lines will add an equal quantity)
The WMF core features team tracks this bug on Mingle card https://mingle.corp.wikimedia.org/projects/flow/cards/425, but people from the community are welcome to contribute here and in Gerrit.
Fixed in https://gerrit.wikimedia.org/r/#/c/95056/