After finishing Cabin in the woods I went on to level up my characters with the last power feat the were going to get. When I reached Seoni I was ready to give her the acid blast, however, it was nowhere to be found and I was forced to give her something else.
Her arcane blast was upgraded all 5 steps to True arcane blast and truth be told the icons were occupying the total width of the upgrade window so that might have been the issue. After the level up I checked her power feat tab and it was still available (the acid blast feat). I would wager this can happen to any character having more than 5 upgrades to a power feat. Anyone else seen this before?