There will be maintenance on coin servers this morning, to patch, update and reboot. This is also to allow another stratum instance to be deployed. You'll see the coin inventory fluctuate while servers are rebooting, this will also cause stratums to get bumped a few times.
The maturity status looks wrong on the Ninja coins for Phi and x16r. The timer has no number to count to on the graphics page. Perhaps I am seeing something wrong.
The pool figures that out automagically so for new coins its yet to know the finial count untill it passes.