I had something similar with evince, but it turned out the data was still present but not displayed. Anyway I encourage you to submit a bug (I need to as well).
So which/how many users use Adobe Reader on Linux ?
Posted Aug 17, 2012 19:59 UTC (Fri) by daniel (subscriber, #3181)
[Link]
I managed to fill out pdf forms a couple of times with Okular. Some dodgy behavior with saving as has been noted. But Okular seems close to obsoleting Adobe's insecure, proprietary product.