Same-sex marriage glitch

I’ve been on a retirement visa for 6 years, and living with my same-sex Thai partner.

When it became legal in January, we got married. So I assumed that meant I could get an extension of stay based on marriage to a Thai national.

But it turns out that the Immigration office in Chiang Mai (and elsewhere?) doesn’t agree—they refuse to accept my application, according to two reputable visa agencies.

Any explanation? Workaround? I let my savings go down below 600k on the assumption that I’d only need 400k for the next extension, so now getting my retirement extension looks problematical.