Fix bug where read-receipts lost their timestamps (#4927)

Make sure that they are sent correctly over the replication stream.

Fixes: #4898

1 files changed, 3 insertions, 1 deletions

diff --git a/synapse/storage/receipts.py b/synapse/storage/receipts.py

index 0fd1ccc40a..89a1f7e3d7 100644
--- a/synapse/storage/receipts.py
+++ b/synapse/storage/receipts.py
@@ -301,7 +301,9 @@ class ReceiptsWorkerStore(SQLBaseStore):
                 args.append(limit)
             txn.execute(sql, args)
 
-            return txn.fetchall()
+            return (
+                r[0:5] + (json.loads(r[5]), ) for r in txn
+            )
         return self.runInteraction(
             "get_all_updated_receipts", get_all_updated_receipts_txn
         )