The limit set for a filter in a room's StateFilter is ignored

[matrixbot]

This issue has been migrated from #7306.

---

Description

I'm using the below filter in a sync:

{
  "room": {
    "state": {
      "types": [
        "m.room.member",
        "m.room.name"
      ],
      "limit": 10
    },
    "timeline": {
      "limit": 10
    },
    "ephemeral": {
      "not_types": [ "*" ]
    }
  }
}

Please note that both room state and timeline limits are set to 10. In the resulting JSON I see my limit applied in timeline events (also limited: true), but not in room state events (one room in join has 4000+ events listed). According to the client-server API docs a limit clause should apply to StateFilter

Steps to reproduce

• perform a sync without since
• include a filter in the query that requests room.state.limit = 10

The limit should apply in e.g. rooms.join.<roomId>.state.events, but it doesn't seem to do so.

• Homeserver: mozilla.modular.im

If not matrix.org:

• Version: {"server_version": "1.12.3", "python_version": "3.7.7"}

• Install method:

• Platform: