Just started a cloud test project and while I seem to have Jira Administrator permissions cannot seem to fully manage issues. Nothing I do seems to do anything to project and played with every setting and scheme and screen and field I can think of. Still cannot view or edit all default or custom fields, tabs, etc. and wondering if the orginal template of free plan is the restriction. Must be having a total brain freeze with the good old Jira interface (possible) or mind block to see that missing puzzle piece in using this new Jira issues experience... Need some brain slap to wake up 
