contact won't display

[jj69]

I entered a Gmail contact from my HTC Droid Eris (2.1 OTA), but it would not display unless I searched for it. If I went to the people app, it was not there. When I searched, then all contacts are listed (including facebook contacts) and it was there. Finally, I went to a PC and edited it in Gmail. I changed the email address category from other to home and saved it. I synced my phone. Now it appears in the contact list. Wierd. Any ideas on what caused this behavior and how to avoid it? Thanks.