i could not reproduce the problem you described above. The point is that the responsibility of the chunking managent is a different one, so i think it’s worthy to check what happens with the new networking library, and let us know if the problem persists. Of course, the 2.9-beta1 includes more features that you will enjoy (check ownCloud 2.9 beta app for Android released).
On server side, i encourage you to upgrade to oC10.