Update ItemAlerter.cs

Rect clientRect = this.poe.Internal.game.IngameState.IngameUi.Minimap.SmallMinimap.GetClientRect();
            Rect clientWindow = this.poe.Window.ClientRect();
			Vec2 rightTopAnchor = new Vec2(clientRect.X + clientRect.W, clientRect.Y + clientRect.H + 5);

Lines where clipped/missing.