User Mentions violate Matrix 1.11 Spec

[TjardL]

Checklist

• I could not find a solution in the documentation, the existing issues or discussions.
• I already asked for help in the chat

In which Project did the bug appear?

Other

If you selected "Other" as Project, please enter in which project the bug occurred.

Own App based on matrix

On which platform did the bug appear?

Chrome

SDK Version

33

Describe the problem caused by this bug

When mentioning a user, the raw data is in the following format, which is conform to matrix specification 1.3
{
"type": "m.room.message",
"content": {
"body": "@[USER] asdas",
"format": "org.matrix.custom.html",
"formatted_body": "<a href="https://matrix.to/#/@username:matrix.org\">@[Tjard L] asdas",
"msgtype": "m.text"
},
[...]
}

However, in Matrix 1.11 , this is changed to the following schema:
{
"body": "Hello Alice!",
"msgtype": "m.text",
"format": "org.matrix.custom.html",
"formatted_body": "Hello Alice!",
"m.mentions": {
"user_ids": ["@alice:example.org"]
}
}

The "m.mentions" field is missing.

Steps To Reproduce

1. Send message with a mention in e.g. Fluffy Chat Web Client
2. Open Raw data of the event

Screenshots or Logs

No response

Security related

No response

[krille-chan]

Where is this violating the spec? As far as I can see, sending the m.mention field is optional

[Johennes]

This is not technically a spec violation. However, the spec does recommend that clients always include m.mentions for backwards compatibility.