I had the same problem and ripped a ton of CDs before I noticed no tags. I browse by folder - bad habit.
In my old version of EAC (ver 0.95) there is a checkbox on the main screen that needs to be ticked for the tags to be written. I don't know if it was checked by default, but it got unchecked and wasted a lot of time. Do they still have that same so called "feature?" I switched to dbpoweramp.