diff --git a/muted-tests.yml b/muted-tests.yml
index cbbdcc1e82f68..001957a88e332 100644
--- a/muted-tests.yml
+++ b/muted-tests.yml
@@ -442,8 +442,6 @@ tests:
 - class: org.elasticsearch.xpack.security.CoreWithSecurityClientYamlTestSuiteIT
   method: test {yaml=cat.aliases/40_hidden/Test cat aliases output with a visible index with a hidden alias}
   issue: https://github.com/elastic/elasticsearch/issues/121128
-- class: org.elasticsearch.xpack.esql.qa.multi_node.EsqlSpecIT
-  issue: https://github.com/elastic/elasticsearch/issues/121411
 
 # Examples:
 #
diff --git a/server/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java b/server/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java
index 8cf631b660b1e..36b6709661017 100644
--- a/server/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java
+++ b/server/src/main/java/org/elasticsearch/index/translog/TranslogWriter.java
@@ -29,6 +29,7 @@
 import org.elasticsearch.index.engine.TranslogOperationAsserter;
 import org.elasticsearch.index.seqno.SequenceNumbers;
 import org.elasticsearch.index.shard.ShardId;
+import org.elasticsearch.search.lookup.Source;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -298,8 +299,10 @@ private synchronized boolean assertNoSeqNumberConflict(long seqNo, BytesReferenc
                             + "], with different data. "
                             + "prvOp ["
                             + prvOp
+                            + (prvOp instanceof Translog.Index index ? " source: " + Source.fromBytes(index.source()).source() : "")
                             + "], newOp ["
                             + newOp
+                            + (newOp instanceof Translog.Index index ? " source: " + Source.fromBytes(index.source()).source() : "")
                             + "]",
                         previous.v2()
                     );