I ran into this problem by accident. Some how I had disabled Calendar sync, while screwing around to get it back on I had edited some events on my Google Calendar from my computer. I have two interviews tomorrow and figured it would be good to put the best possible information in the location (full address).
I noticed that if the full address was in the location field it would not sync to the phone but as soon as I switched it back to just the name of the schools it immediately synced.