http/2 not working correctly

[ferror56]

Probably it is related to #3126, but when I according to documentation do:
client = httpx.AsyncClient(http2=True, verify=False)
post_response = await client.post(post_url, headers=post_headers, cookies=post_cookies, data=post_data)
in the logs I see:
DEBUG [2025-01-25 14:02:16] httpx - load_ssl_context verify=False cert=None trust_env=True http2=False

So http2=False from the beginning, why? It was instructed to use http2=true. If I specify http1=False, http2=True the connection is not made succesfully. Curl and web browsers do http2 on the same server successfully.