UISIs after upgrading dendrite

kegsay commented 1 year ago

Background information

Dendrite version or git SHA: 0.10.7+31f56ac3
Monolith or Polylith?: Monolith
SQLite3 or Postgres?: Postgres
Running in Docker?: No
go version: go version go1.19.3 windows/amd64
Client used (if applicable): Element Desktop (both sender/receiver)

Description

What is the problem: UISIs on previously fine group chat room.
Who is affected: Single user
How is this bug manifesting: Unable to decrypt: The sender's device has not sent us the keys for this message.
When did this first appear: After upgrading from 7ad87eace3b88b3aaa88dc8a0acec9b64ffcc52c

Steps to reproduce

Filed on behalf of @emanuele.aliberti:mtka.eu - who sent a screenshot which indicates that:

Previously decrypted messages remain decrypted.
New messages after the upgrade are UISIs.
Neither Element client was restarted in the interim.

The room key must have changed, but why this wasn't shared post upgrade I don't know. It could be that the room key happened to change during the downtime between upgrades, but this should have been retried.

After restarting both Element instances, new messages are decrypted, but previous UISIs remain as UISIs. This may point to an Element Desktop bug.

ealib commented 1 year ago

I would add that after closing and re-launching Element, new messages sent from then on are decrypted correctly.

Messages sent between the time Dendrite was updated and the time Element was restarted remain undecrypted and forcing a key request has no effect.

S7evinK commented 1 year ago

Is this on the same instance? Seeing this randomly after not sending messages for a day (or something). (not even after upgrading)

S7evinK commented 1 year ago

As a note: sending /discardsession in Element has helped on the same instance (so far)

matrix-org / dendrite