Reeder (RSS) for Mac and Calendar, MacBook Pro Core i7 running Yosemite. Short of a full reinstall of the OS w/o restoring from Time Machine, I've tried everything. When I open my apps, all open full screen except Safari which is by my own personal preference yet when I open Calendar or Reeder, those open in windowed mode despite my having them full screen when I closed the applications. To recreate issue, open calendar, go full screen, close application. Restart calendar and it's back to Window mode. I've reinstalled the entire OS and restored from Time Machine, disk permissions and reinstalled Reeder from scratch. Issues persist. Running 10.10.2 w/o any visual customizations / hacks. Help?