JSONUtility on Hololens

I’m trying to deserialize a json string into an object on the Hololens.
In Editor it works perfectly. On Hololens, I get an InvalidCastException.

What’s going on there?

I haven’t personally touched JsonUtility, but looking over the code for it, I don’t immediately see how or why that would be happening. Would you mind filing a bug so we can take a look at the code and repro? Please put “[HoloLens]” at the start of the bug title so it gets to our team as quickly as possible. Thanks!