Not just some - all of your druid abilities and traits vanish when you wild shape, currently - you just straight up become the animal, and are not a druid any more; it's been like this since it was released, and hasn't been changed, despite many reports, unfortunately.
The issue with moonbeam has been recorded since it was put in as well - and indeed, if you take a look back over the focus thread on spell,s you'll see that the issue with spells damage timing and save timing (of which Moonbeam's damage-on-cast was just the latest spell to display the coding issue underlying all spells) has been present since day one, and never fixed as of yet. We make reports, but so far no word of it being addressed.
