Can't set identity server

[mikezackles]

Steps to reproduce

I'm hoping there's just a configuration issue somewhere. I have a self-hosted synapse instance running behind cloudflare using their proxying. The federation tester finds no issues, and thus far I haven't found any indication of issues in my proxy logs. The latest Arch package of element-web (1.11.52-1) is running on a different subdomain. Note that the same issues happen with both element-web and element-desktop.

I have verified an email address, but I cannot set vector.im as the identity server.

I can see requests made to vector.im:

The 403 seems to just indicate that I need to sign the TOS, for which I get a dialog:

Note that there is only a checkbox for privacy and not terms of service as I think I've seen in another screenshot.

Outcome

After agreeing to the privacy notice, I get this error:

homeserver.yaml:

server_name: mydomain.com
public_baseurl: https://matrix.mydomain.com
default_identity_server: https://vector.im

.well-known/matrix/client:

{
    "m.homeserver": {
        "base_url": "https://matrix.mydomain.com"
    },
    "m.identity_server": {
        "base_url": "https://vector.im"
    }
}

Additionally I am getting a sync error every 5 syncs or so. It seems unrelated, but I'm including for completeness. According to the matrix logs the client disconnects prematurely:

Jan 05 08:22:39 matrix synapse[7322]: 2024-01-05 08:22:39,988 - synapse.http.site - 377 - INFO - GET-131 - Connection from client lost before response was sent
Jan 05 08:22:39 matrix synapse[7322]: 2024-01-05 08:22:39,997 - synapse.rest.client.sync - 224 - INFO - GET-131 - Client has disconnected; not serializing response.
Jan 05 08:22:39 matrix synapse[7322]: 2024-01-05 08:22:39,997 - synapse.http.server - 776 - WARNING - GET-131 - Not sending response to request <XForwardedForRequest at 0x6fcda41e3910 method='GET' uri='/_matrix/client/v3/sync?filter=0&timeout=30000&set_presence=online&since=s229_17231_0_121_331_1_124_30_0_1' clientproto='HTTP/1.1' site='unix'>, already disconnected.

Cloudflare then times out waiting for a response that doesn't come.

Note that I tried /rageshake and it didn't work, but I'm probably missing something simple.

Thanks in advance for any help!

Operating system

Arch Linux

Browser information

firefox 120.0.1 chrome 120.0.6099.109

URL for webapp

1.11.52

Application version

1.11.52

Homeserver

Synapse 1.95.1

Will you send logs?

No

[t3chguy]

Regressed by matrix-org/matrix-react-sdk#10984

[mikezackles]

Thanks for the quick fix!