I completely forgot that Ibanez paints pup cavities. That makes it a little harder to diagnose. However, it does look like that on the bit closer to the neck the rosewood may have actually partially separated from the walnut veneer on the maple, but looks like it has a solid hold of the walnut that it sits on top of which is glued to a bigger piece of mahogany that spans over both the walnut and maple. Looking at this my guess is that someone forgot to add a dab of glue between the rosewood and that thin walnut veneer. With the number of glue joints on this bass it doesn't shock me that it has occurred, especially on such a tiny section since that rosewood is only about a 1/4 inch thick it looks like.
My honest assessment of this is that with the quantity of lams and that every lamination is a different size, the top should be stable. the walnut and mahogany underneath the rosewood will keep it in place, however, it will need a touch of very thing (as in watery) superglue to keep moisture from exacerbating the issue.
My recommendation is to return it. While I believe a luthier will be able to apply glue to make it safe for the ages, I feel like the 'what if's' will gnaw at you for as long as you own this bass.
I hope this helps
My honest assessment of this is that with the quantity of lams and that every lamination is a different size, the top should be stable. the walnut and mahogany underneath the rosewood will keep it in place, however, it will need a touch of very thing (as in watery) superglue to keep moisture from exacerbating the issue.
My recommendation is to return it. While I believe a luthier will be able to apply glue to make it safe for the ages, I feel like the 'what if's' will gnaw at you for as long as you own this bass.
I hope this helps