Standard Token Exchange Missing in 26.1.3?

Hi,

I built 26.1.3, but I don’t see an option to enable Standard Token Exchange. I tried to submit a request anyway, but got Unsupported grant_type. Is this a bug? Maybe a residual preview flag that shouldn’t need to be set anymore?

My 26.1.3 client

A 26.1.2 I have running in Docker. It’s a similarly-configured client to the above example

-Carl