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Fixups to #17064 #17065

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Apr 8, 2024
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1 change: 1 addition & 0 deletions changelog.d/17065.bugfix
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fix various long-standing bugs which could cause incorrect state to be returned from `/sync` in certain situations.
3 changes: 3 additions & 0 deletions synapse/handlers/sync.py
Original file line number Diff line number Diff line change
Expand Up @@ -1272,8 +1272,11 @@ async def _compute_state_delta_for_incremental_sync(
for e in batch.events[1:]:
if e.prev_event_ids() != [prev_event_id]:
break
prev_event_id = e.event_id
else:
is_linear_timeline = True
else:
is_linear_timeline = True

if is_linear_timeline and not batch.limited:
state_ids: StateMap[str] = {}
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