Why is my Wall showing as under construction in a City where it's not upgrading?
There was a visual issue related to upgrading your Wall in Google Chrome released with our patch on August 22nd, 2011.
If you upgrade your Wall in your Second, Third, or Fourth City while using Google Chrome, upon refreshing your browser, the Wall will show as under construction in your City, Field, and Map view inall your Cities. This will happen each time you refresh your browser.
There are two workarounds for this issue:
1. Try switching your browser to Mozilla Firefox or Internet Explorer 8
2. Click back into the City you began construction in. Once you do this, your Wall construction will stop appearing in your other Cities.