Mismatched room ID (unable to decrypt errors)

[andybalaam]

Steps to reproduce

1. Start my day, open Element, click on a room

Outcome

What did you expect?

To see all messages

What happened instead?

Several rooms show Unable to decrypt errors. This one says "mismatched room id":

(These are probably unrelated, but happened at the same time:

Note that some of these messages were sent by me, on my phone.
)

Operating system

Ubuntu 21.10

Browser information

Firefox 99.0

URL for webapp

https://develop.element.io

Application version

Element version: 479d4bf-react-d87cfae0c97f-js-4721aa1d241a Olm version: 3.2.8

Homeserver

matrix.org

Will you send logs?

Yes

[babolivier]

The first error (which I've seen before and looks like it only happens in threads) is on a message from me, I've rageshaken from the device that sent it here: https://github.com/matrix-org/element-web-rageshakes/issues/12915

[t3chguy]

Please track all general UISI/UTDs in #2996

[michaelkaye]

FTR, This error is a unique one as far as I've seen ** Unable to decrypt: Error: Mismatched room_id for inbound group session (expected !XXX:matrix.org, was undefined) **" rather than the standard key missing errors, but it is probably related to other reports - eg #22094

[babolivier]

@t3chguy

Please track all general UISI/UTDs in #2996

The first one is not a general one though: Mismatched room_id for inbound group session (expected ![...], was undefined)

Plus it seems to only happen in threads.

[andybalaam]

Re-opening because I don't think this is general.

[t3chguy]

In that case this is a duplicate of #22094 - no?

[andybalaam]

Duplicate of #22094