No sooner had Apple released the Beta seed of OSX 10.1.1 they released the actual product. There appears to be a number of significant if not niggly problems in OSX 10. These are in large part due to iCloud drive and the rearchitecting of iCloud itself, a necessary but painful revision.
Expect further releases of the OS to attempt to deal with user issues and complaints. Yosemite remains Apple’s finest OS to date but it is also one of its most complicated upgrades. The next release of the OS should see significant dececrease in the reported problems but till then ….