Since last weekend, I see Nightly (32 bit on Windows 8.1 64 bit) only downloading full updates, e.g. a few minutes ago from 20151109 to 20151110. Same issue yesterday and if I remember correct the day before.
This is a combination of multiple bugs :( Bug 1195365 - Stop publishing complete MARs to balrog as a part of build/l10n repacks Bug 1202334 - Intermittent [taskcluster:error] Task was aborted because states could not be created successfully. Error: Gateway Time-out Bug 1223872 - Single locale release updates should not race each other
Getting partial ones for the last days.