We just released a hotfix that deals with one issue that occurred after today's Upgraded Living Update: Drawing one particular Cornerstone caused the Cornerstone panel to become non-responsive.
The issue will be resolved once you update the game to version 0.56.4.
Know issues We are aware that there are additional issues related to the cornerstones and we'll also fix those in another patch coming tomorrow:
We must admit, this is unusually many issues for an update and we're extremely sorry for it. We'll fix the issues and do our best to improve. Thank you for your understanding!