diff --git a/components/script/dom/idbobjectstore.rs b/components/script/dom/idbobjectstore.rs
index cc6566399d2..a63fcc78333 100644
--- a/components/script/dom/idbobjectstore.rs
+++ b/components/script/dom/idbobjectstore.rs
@@ -257,7 +257,10 @@ impl IDBObjectStore {
         }
 
         // Step 10. Let clone be a clone of value in targetRealm during transaction. Rethrow any exceptions.
-        let serialized_value = structuredclone::write(cx, value, None)?;
+        let cloned_value = structuredclone::write(cx, value, None)?;
+        let Ok(serialized_value) = bincode::serialize(&cloned_value) else {
+            return Err(Error::InvalidState);
+        };
 
         let (sender, receiver) = indexed_db::create_channel(self.global());
 
@@ -268,7 +271,7 @@ impl IDBObjectStore {
             AsyncOperation::ReadWrite(AsyncReadWriteOperation::PutItem {
                 sender,
                 key: serialized_key,
-                value: serialized_value.serialized,
+                value: serialized_value,
                 should_overwrite: overwrite,
             }),
             receiver,
diff --git a/components/script/dom/idbrequest.rs b/components/script/dom/idbrequest.rs
index 42e75151b64..cec15a4e1c8 100644
--- a/components/script/dom/idbrequest.rs
+++ b/components/script/dom/idbrequest.rs
@@ -4,7 +4,6 @@
 
 use std::cell::Cell;
 
-use constellation_traits::StructuredSerializedData;
 use dom_struct::dom_struct;
 use ipc_channel::router::ROUTER;
 use js::jsapi::Heap;
@@ -117,14 +116,14 @@ impl RequestListener {
                     key_type_to_jsval(GlobalScope::get_cx(), &key, answer.handle_mut())
                 },
                 IdbResult::Data(serialized_data) => {
-                    let data = StructuredSerializedData {
-                        serialized: serialized_data,
-                        ..Default::default()
-                    };
-
-                    if structuredclone::read(&global, data, answer.handle_mut()).is_err() {
+                    let result = bincode::deserialize(&serialized_data)
+                        .map_err(|_| Error::Data)
+                        .and_then(|data| structuredclone::read(&global, data, answer.handle_mut()));
+                    if let Err(e) = result {
                         warn!("Error reading structuredclone data");
-                    }
+                        Self::handle_async_request_error(&global, cx, request, e);
+                        return;
+                    };
                 },
                 IdbResult::Count(count) => {
                     answer.handle_mut().set(DoubleValue(count as f64));
diff --git a/tests/wpt/meta/IndexedDB/blob-valid-after-abort.any.js.ini b/tests/wpt/meta/IndexedDB/blob-valid-after-abort.any.js.ini
index 47920aae648..7aae36eab3d 100644
--- a/tests/wpt/meta/IndexedDB/blob-valid-after-abort.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/blob-valid-after-abort.any.js.ini
@@ -2,13 +2,13 @@
   expected: ERROR
 
 [blob-valid-after-abort.any.worker.html]
-  expected: CRASH
+  expected: TIMEOUT
   [A blob can be read back after the transaction that added it was aborted.]
     expected: TIMEOUT
 
 
 [blob-valid-after-abort.any.html]
-  expected: CRASH
+  expected: TIMEOUT
   [A blob can be read back after the transaction that added it was aborted.]
     expected: TIMEOUT
 
diff --git a/tests/wpt/meta/IndexedDB/blob-valid-after-deletion.any.js.ini b/tests/wpt/meta/IndexedDB/blob-valid-after-deletion.any.js.ini
index fe477ce8a89..23cbff1d07f 100644
--- a/tests/wpt/meta/IndexedDB/blob-valid-after-deletion.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/blob-valid-after-deletion.any.js.ini
@@ -1,10 +1,10 @@
 [blob-valid-after-deletion.any.html]
-  expected: CRASH
+  expected: TIMEOUT
   [Blobs stay alive after their records are deleted.]
     expected: TIMEOUT
 
 
 [blob-valid-after-deletion.any.worker.html]
-  expected: CRASH
+  expected: TIMEOUT
   [Blobs stay alive after their records are deleted.]
     expected: TIMEOUT
diff --git a/tests/wpt/meta/IndexedDB/blob-valid-before-commit.any.js.ini b/tests/wpt/meta/IndexedDB/blob-valid-before-commit.any.js.ini
deleted file mode 100644
index e67dfb09af6..00000000000
--- a/tests/wpt/meta/IndexedDB/blob-valid-before-commit.any.js.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[blob-valid-before-commit.any.html]
-  expected: CRASH
-  [Blobs can be read back before their records are committed.]
-    expected: TIMEOUT
-
-
-[blob-valid-before-commit.any.worker.html]
-  expected: CRASH
-  [Blobs can be read back before their records are committed.]
-    expected: TIMEOUT
diff --git a/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini b/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini
index 7e35d96fb64..e486e532b4e 100644
--- a/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini
+++ b/tests/wpt/meta/IndexedDB/transaction-deactivation-timing.any.js.ini
@@ -16,9 +16,6 @@
   [Deactivation of new transactions happens at end of invocation]
     expected: FAIL
 
-  [New transactions are deactivated before next task]
-    expected: FAIL
-
   [New transactions from microtask are deactivated before next task]
     expected: FAIL