Use full voting power instead of current mana for voting in order to stabilize use of upvote mana.
Full description of the issue in this Hive post.
Long story short: the problem stems from the fact that upvotes use current_mana
when determining amount of mana to use (and therefore power of the vote). Current mana changes with each vote, which makes consecutive votes of the same weight weaker. That in effect makes "deep portion" of the mana unusable and skews power of votes away from curator's intention. The trivial fix is to use full power (determined only by stake) as base for mana used for vote, of course starting with HF28. Other than fixing problems of current code, the most noteworthy consequence of the change is that users will be able to use all their voting mana (down to zero), and that "50 full power votes in 5 day recharge window" will finally be true.