I went to my local Apple store this morning in Westlake, Ohio since they opened at 8am & after spending about 90 minutes trying to figure out this Widget, notification center, social sharing, markup bug we came to the conclusion of how to fix it. This came from the genius bar after talking to Apple Support and I know it sucks and is a little time consuming but it does work & everything works as it's suppose to then. I'd like to note that we discovered the bug only affects the current admin account or any current account you have on your Mac except for the Guest user. Here we go... Create a new Admin Account and name it what you want it to be named as it will be your new permanent account. Next take everything from your Users Folder under your current account name and copy it to either the shared folder or an external device. (I know it's a pain in the you know what) Go ahead and log out of your current account and into the new account. Then copy everything to the new User folder and make sure your applications are intact. Then log into the app store and it will need to redownload all of your apps (another sucky part but very quick) you can then delete your old user account and delete the old user folder and trash them. You should now have Yosemite working as it is suppose to work. For some reason this big affects only the current accounts and forces you to create new accounts and this is the fix from Apple, it does save everything you have but it's a time crunch because you have to copy everything manually to save it.