Nexus Blitz Elixir bug

I was playing a game of Nexus Blitz and had 5 fully built items. I bought an Elixir of Sorcery , clicked it in my inventory out of the shop menu and the elixir disappeared but the effect didn't occur and the inventory spot was still occupied. I then sold the Elixir back, bought my 6th item, then the Elixir of Sorcery and it automatically consumed it per normal, giving the regular effect.