diff --git a/mediapipe/java/com/google/mediapipe/framework/GraphTextureFrame.java b/mediapipe/java/com/google/mediapipe/framework/GraphTextureFrame.java
index 6a2c97b94..a253a8289 100644
--- a/mediapipe/java/com/google/mediapipe/framework/GraphTextureFrame.java
+++ b/mediapipe/java/com/google/mediapipe/framework/GraphTextureFrame.java
@@ -66,7 +66,8 @@ public class GraphTextureFrame implements TextureFrame {
     if (nativeBufferHandle == 0) {
       return 0;
     }
-    if (activeConsumerContextHandleSet.add(nativeGetCurrentExternalContextHandle())) {
+    long contextHandle = nativeGetCurrentExternalContextHandle();
+    if (contextHandle != 0 && activeConsumerContextHandleSet.add(contextHandle)) {
       // Gpu wait only if deferredSync is true, such as when this GraphTextureFrame is created using
       // PacketGetter.getTextureFrameDeferredSync().
       if (deferredSync) {
@@ -116,7 +117,14 @@ public class GraphTextureFrame implements TextureFrame {
     GlSyncToken consumerToken = null;
     // Note that this remove should be moved to the other overload of release when b/68808951 is
     // addressed.
-    if (activeConsumerContextHandleSet.remove(nativeGetCurrentExternalContextHandle())) {
+    final long contextHandle = nativeGetCurrentExternalContextHandle();
+    if (contextHandle == 0 && !activeConsumerContextHandleSet.isEmpty()) {
+      logger.atWarning().log(
+          "GraphTextureFrame is being released on non GL thread while having active consumers,"
+              + " which may lead to external / internal GL contexts synchronization issues.");
+    }
+
+    if (contextHandle != 0 && activeConsumerContextHandleSet.remove(contextHandle)) {
       consumerToken =
           new GraphGlSyncToken(nativeCreateSyncTokenForCurrentExternalContext(nativeBufferHandle));
     }
@@ -169,7 +177,9 @@ public class GraphTextureFrame implements TextureFrame {
   private native void nativeReleaseBuffer(long nativeHandle);
 
   private native int nativeGetTextureName(long nativeHandle);
+
   private native int nativeGetWidth(long nativeHandle);
+
   private native int nativeGetHeight(long nativeHandle);
 
   private native void nativeGpuWait(long nativeHandle);