diff --git a/runners/prism/java/build.gradle b/runners/prism/java/build.gradle
index 5e5ddbe139ee..c8898b48b718 100644
--- a/runners/prism/java/build.gradle
+++ b/runners/prism/java/build.gradle
@@ -106,14 +106,13 @@ def sickbayTests = [
 
     // Prism doesn't support multiple TestStreams.
     'org.apache.beam.sdk.testing.TestStreamTest.testMultipleStreams',
-    // Sometimes fails missing a final 'AFTER'. Otherwise, Hangs in ElementManager.FailBundle due to a held stageState lock.
-    'org.apache.beam.sdk.testing.TestStreamTest.testMultiStage',
 
     // GroupIntoBatchesTest tests that fail:
-    // Teststream has bad KV encodings due to using an outer context.
+    // Wrong number of elements in windows after GroupIntoBatches: null
+    // Incorrect output collection after GroupIntoBatches: null
     'org.apache.beam.sdk.transforms.GroupIntoBatchesTest.testInStreamingMode',
     'org.apache.beam.sdk.transforms.GroupIntoBatchesTest.testBufferingTimerInFixedWindow',
-    // sdk worker disconnected
+    // varint overflow 4120879041988 on counting step
     'org.apache.beam.sdk.transforms.GroupIntoBatchesTest.testBufferingTimerInGlobalWindow',
     // ShardedKey not yet implemented.
     'org.apache.beam.sdk.transforms.GroupIntoBatchesTest.testWithShardedKeyInGlobalWindow',
diff --git a/sdks/go/pkg/beam/runners/prism/internal/execute.go b/sdks/go/pkg/beam/runners/prism/internal/execute.go
index cad1fb7e5479..e87d0507af28 100644
--- a/sdks/go/pkg/beam/runners/prism/internal/execute.go
+++ b/sdks/go/pkg/beam/runners/prism/internal/execute.go
@@ -285,8 +285,8 @@ func executePipeline(ctx context.Context, wks map[string]*worker.W, j *jobservic
 					//slog.Warn("teststream bytes", "value", string(v), "bytes", v)
 					return v
 				}
-				// Hack for Java Strings in test stream, since it doesn't encode them correctly.
-				forceLP := cID == "StringUtf8Coder" || cID != pyld.GetCoderId()
+				// the coder from teststream payload has to be LP'ed
+				forceLP := cID != pyld.GetCoderId()
 				if forceLP {
 					// slog.Warn("recoding TestStreamValue", "cID", cID, "newUrn", coders[cID].GetSpec().GetUrn(), "payloadCoder", pyld.GetCoderId(), "oldUrn", coders[pyld.GetCoderId()].GetSpec().GetUrn())
 					// The coder needed length prefixing. For simplicity, add a length prefix to each
diff --git a/sdks/go/pkg/beam/runners/prism/internal/preprocess.go b/sdks/go/pkg/beam/runners/prism/internal/preprocess.go
index 3311bcced9f4..16fe6a095e68 100644
--- a/sdks/go/pkg/beam/runners/prism/internal/preprocess.go
+++ b/sdks/go/pkg/beam/runners/prism/internal/preprocess.go
@@ -27,6 +27,7 @@ import (
 	"github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/jobservices"
 	"github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/urns"
 	"golang.org/x/exp/maps"
+	"google.golang.org/protobuf/encoding/prototext"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -152,6 +153,7 @@ func (p *preprocessor) preProcessGraph(comps *pipepb.Components, j *jobservices.
 	}
 
 	// Extract URNs for the given transform.
+	slog.Debug("components in pipeline proto", "proto", prototext.Format(comps))
 
 	keptLeaves := maps.Keys(leaves)
 	sort.Strings(keptLeaves)
diff --git a/sdks/java/core/src/main/java/org/apache/beam/sdk/util/construction/TestStreamTranslation.java b/sdks/java/core/src/main/java/org/apache/beam/sdk/util/construction/TestStreamTranslation.java
index db1a2f875c90..9de85778e3a4 100644
--- a/sdks/java/core/src/main/java/org/apache/beam/sdk/util/construction/TestStreamTranslation.java
+++ b/sdks/java/core/src/main/java/org/apache/beam/sdk/util/construction/TestStreamTranslation.java
@@ -123,7 +123,8 @@ static <T> RunnerApi.TestStreamPayload.Event eventToProto(
                   .setTimestamp(element.getTimestamp().getMillis())
                   .setEncodedElement(
                       ByteString.copyFrom(
-                          CoderUtils.encodeToByteArray(coder, element.getValue()))));
+                          CoderUtils.encodeToByteArray(
+                              coder, element.getValue(), Coder.Context.NESTED))));
         }
         return RunnerApi.TestStreamPayload.Event.newBuilder().setElementEvent(builder).build();
       default:
@@ -149,7 +150,8 @@ static <T> TestStream.Event<T> eventFromProto(
             protoEvent.getElementEvent().getElementsList()) {
           decodedElements.add(
               TimestampedValue.of(
-                  CoderUtils.decodeFromByteArray(coder, element.getEncodedElement().toByteArray()),
+                  CoderUtils.decodeFromByteArray(
+                      coder, element.getEncodedElement().toByteArray(), Coder.Context.NESTED),
                   new Instant(element.getTimestamp())));
         }
         return TestStream.ElementEvent.add(decodedElements);