m.direct event sometimes contains "[object Object]" instead of a user ID as a key

[jplatte]

Description

Some m.direct events seen in the wild contain

"content": {
    "[object Object]": ["!someroomid:homeserver"],
}

Steps to reproduce

Unclear, but @afranke has an account where this happens.

Version information

• Homeserver: matrix.org

[richvdh]

[object Object] looks like something javascript would create: this suggests a client bug to me.

[richvdh]

indeed I'm going to close this in favour of element-hq/element-web#7485.

[jplatte]

I was thinking the same. Still, is this not something Synapse should / could filter out?

[richvdh]

no, the homeserver is not responsible for checking the validity of account data. matrix-org/matrix-spec-proposals#2801 goes into some detail as to why this isn't practical.

[jplatte]

I see, makes sense.