After I added a city wall, my Metropolis disappeared
I used the Engineer progress card to add a city wall to my Metropolis, however, the Metropolis part disappeared. Fortunately, my score and the crown badge still indicated that I had the Metropolis. I am emailing a screen shot for this bug report.
@Grist Thank you very much for the report. We received the email and it was forwarded to our developers.
I experienced this today as well. Everything worked fine (score and Metropolis functionality) but the brick wall made the Metropolis icon change to a regular City with Wall.
To help diagnose: My opponents said that they saw the expected Metropolis graphic with wall.
I had the same thing happen today in a game against AI, apparently it hasn't been fixed yet?