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Synapse passes through error codes from remote servers when sending invites, which can invalidate local sessions

Status: Open.

#19872 In element-hq/synapse;

· timedoutuk opened on Jun 20, 2026

Incorrect member count in room summary after accepting invite

Status: Open.

#19865 In element-hq/synapse;

· krille-chan opened on Jun 18, 2026

TestFederationRoomsInvite flake hitting unreachable Exception: Missing state for event that is not user's own membership

A-Federation

A-Invite

Status: Open.

#19858 In element-hq/synapse;

· MadLittleMods opened on Jun 15, 2026

Run golangci-lint in CI

Status: Open.

#19857 In element-hq/synapse;

· AndrewFerr opened on Jun 15, 2026

MSC1763: Proposal for specifying configurable message retention periods

T-ExperimentalFeatureTracking issues for experimental features in SynapseTracking issues for experimental features in Synapse

Status: Open.

#19852 In element-hq/synapse;

· Half-Shot opened on Jun 15, 2026

DELETE room API fails when room exists in sliding_sync_joined_rooms_to_recalculate

Status: Open.

#19822 In element-hq/synapse;

· io235 opened on Jun 4, 2026

"Fix lint" action should also regenerate config docs

A-CI

O-Uncommon

T-Enhancement

Z-Dev-Wishlist

Status: Open.

#19815 In element-hq/synapse;

· turt2live opened on Jun 1, 2026

get_missing_events does not respect min_depth

A-Federation

A-Performance

A-Spec-Compliance

O-Frequent

S-Tolerable

T-Defect

Status: Open.

#19812 In element-hq/synapse;

· timedoutuk opened on May 30, 2026

CI run against Twisted trunk is failing

Status: Open.

#19806 In element-hq/synapse;

· github-actions opened on May 27, 2026

CI run against latest deps is failing

Status: Open.

#19805 In element-hq/synapse;

· github-actions opened on May 27, 2026

Presence stream stalls intermittently: presence_stream keeps growing while stream_positions(presence_stream, master) stops until restart

Status: Open.

#19800 In element-hq/synapse;

· alexantropoff opened on May 22, 2026

Large batch of to-device messages was dropped

A-to-device-messagesEDU messages sent exactly once to a specific set of devices. Related to E2EEEDU messages sent exactly once to a specific set of devices. Related to E2EE

O-Uncommon

S-Critical

T-Defect

Status: Open.

#19795 In element-hq/synapse;

· richvdh opened on May 21, 2026