diff --git a/bindings/otel-thread-ctx.cc b/bindings/otel-thread-ctx.cc
index 0d3357a1..b7c7dfd4 100644
--- a/bindings/otel-thread-ctx.cc
+++ b/bindings/otel-thread-ctx.cc
@@ -348,6 +348,7 @@ void CtxWrap::DrainLive(void* arg) {
     if (!p->handle_.IsEmpty()) {
       SetAlignedPointerInInternalField(p->handle_.Get(isolate), 0, nullptr);
     }
+    std::atomic_signal_fence(std::memory_order_acq_rel);
     Destroy(p);
     p = next;
   }
diff --git a/ts/src/otel-thread-ctx.ts b/ts/src/otel-thread-ctx.ts
index c533f8a5..d2a4c1e7 100644
--- a/ts/src/otel-thread-ctx.ts
+++ b/ts/src/otel-thread-ctx.ts
@@ -155,7 +155,7 @@ const SCHEMA_VERSION = 'nodejs_v1_dev';
 // (no V8 pointer compression, no sandbox); the reader is Linux-only per
 // the OTEP anyway, so the fallbacks just keep processContextAttributes
 // consistent in shape.
-let JS_OBJECT_RECORD_OFFSET = 24;
+let JS_OBJECT_RECORD_OFFSET = 0x18;
 let TAGGED_SIZE = 8;
 let JS_MAP_TABLE_OFFSET = 0x18;
 let ORDERED_HASH_MAP_HEADER_SIZE = 0x10;
diff --git a/ts/test/test-otel-thread-ctx.ts b/ts/test/test-otel-thread-ctx.ts
index ce3e057b..372a5fff 100644
--- a/ts/test/test-otel-thread-ctx.ts
+++ b/ts/test/test-otel-thread-ctx.ts
@@ -940,7 +940,7 @@ function captureBytes(opts: {
         const pca = getProcessContextAttributes(keys);
         strictAssert.equal(pca['threadlocal.schema_version'], 'nodejs_v1_dev');
         strictAssert.deepEqual(pca['threadlocal.attribute_key_map'], keys);
-        strictAssert.equal(pca['threadlocal.js_object_record_offset'], 24);
+        strictAssert.equal(pca['threadlocal.js_object_record_offset'], 0x18);
         strictAssert.equal(pca['threadlocal.tagged_size'], 8);
         strictAssert.equal(pca['threadlocal.js_map_table_offset'], 0x18);
         strictAssert.equal(