@ Ian
The geocode issue is not likely an issue with the update… have you installed/updated any other plugins or the theme? The likely cause is that another plugin or theme is not limiting its javascript to its own admin pages and it’s causing a fatal javascript error which stops any javascript after the error from running.
Load the page in Chrome, hit the F12 key and then click the Console tab. That will showing you any browser related errors on the page. Mouse hover over the file names on the right. The tooltip will show a file path which will be a hint at the plugin/theme/file causing the error.
Another possibility is you might need to flush your browser cache.
Something, since you are having issues with the maintenance mode plugin, that makes me wonder if it is somehow blocking a script that Connections loads. This should also show up in the Chrome Console. You could test that theory by deactivating the maintenance mode plugin.
Let me know if that helps you track down the issue.
