In my side garden, where all the small "nursery" iris are growing I have something that is taking circular bites out of the rhizome. The leaves are perfectly fine, but the rhizomes have craters. I have pulled up a few of the very small rhizomes and one had a hole from one side to the next, but no leaf damage or other more borer like traits. I have never had this issue before, and it is only in this garden. The larger rhizomes in the garden have not been touched.
