Just had both the "Forgotten freezes interface" and "Spectre" events trigger on the same wave two attempts at X2 in a row. The end result was that both times, I lost my strongest gem and got completely overrun because I didn't have the mana to replace it.
As absolutely stupid as the interface freeze is, I don't think I can get away with demanding that it be replaced with something less stupid. So instead, I want to ask the developer to make it so that the interface freeze and spectre cannot trigger on the same wave. Because if that happens, you automatically lose your best gem and there's nothing you can do about it. It can randomly ruin your run and when you're 60+ waves into a map you've been trying to beat for the past few hours and have it happen not once but TWICE... let's just say my laptop's lucky to still be in one piece.