Bridge not backfilling DM msgs (UPDATE: now affect Spaces too)

[pierrechapuis]

Hi there,

I recently installed mautrix-bridge googlechat 0.5.2 (latest) via docker.

I encountered an issue with the backfill process.

First I logged in successfully using the login-cookie command. Then, after I send or get a new message on Google Chat, I get an invite in Element Chat to accept and open the Space / DM:

• If that is a Space: Old messages are backfilled properly.
• If that is a DM: Backfill is not performed.

--> Am I missing something regarding backfill process for DM?

Below are some settings:

bridge:
    username_template: googlechat_{userid}
    displayname_template: '{full_name} (Google Chat)'
    command_prefix: '!gc'
    initial_chat_sync: 100
    invite_own_puppet_to_pm: true
    sync_with_custom_puppets: false
    sync_direct_chat_list: false

encryption:
        allow: true
        default: true
        appservice: false
        require: false
        allow_key_sharing: false

federate_rooms: false
backfill:
    invite_own_puppet: true
    initial_thread_limit: 1000
    initial_thread_reply_limit: 500
    initial_nonthread_limit: 10000
    missed_event_limit: 5000
    missed_event_page_size: 100
    disable_notifications: true

Thanks a lot in advance for your help.

[pierrechapuis]

I also tried with sync_direct_chat_list: true, same problem.

[pierrechapuis]

Just a head-up about that issue.

As of 2026 March, it seems that this problem also affects Spaces now (not only DM).

[Spartacus348]

Just pinging this, I'm also having this issue. I've found evidence of it in the logs, as well (removing the domain for privacy):

2026-06-10T21:10:06Z DBG Added messages to backfill collection action="initial backfill" channel_id=695400524094242848 channel_receiver= count=0 limit=1000 room_id=!QjDwyxcgye6wuCKgRG:████.██
2026-06-10T21:10:06Z INF Collected messages to backfill action="initial backfill" channel_id=695400524094242848 channel_receiver= count=0 found_all=false limit=1000 room_id=!QjDwyxcgye6wuCKgRG:████.██
2026-06-10T21:10:06Z DBG Not using hungryserv, sending messages one by one action="initial backfill" channel_id=695400524094242848 channel_receiver= limit=1000 room_id=!QjDwyxcgye6wuCKgRG:████.██
2026-06-10T21:10:06Z DBG Forward backfill finished, unlocking lock action="initial backfill" channel_id=695400524094242848 channel_receiver= limit=1000 room_id=!QjDwyxcgye6wuCKgRG:████.██