Font of Rage -support is bugged

Using cluster grenade totems for rage leech. The first totem I summon for every map instantly leeches the max rage (for me 30) and then decays instantly. Or it looks more like "overflowing" just the game forgetting that rage even exists at this point. Then for rest of the map the rage just doesn´t leech. Missing 60% more damage (rage ally notable from passive tree) for this bug jesus.. It still worked on monday.