Two tiles in one space?

[Continuities]

After I beat the dragon, the game asked me if I wanted to continue or new game+, and I chose continue. When night turned into day, a grid piece had two resources on it. I figured it may fix itself when day turned to night. It did not. So, I am sending you a screen capture so you can see it. The interesting part to me is that the piece acts as a red pentagram, even though the green slime is drawn over top. I wish I had more data to give you to help track down this anomaly. I imagine if it will go away when I reload the browser.