diff --git a/dom/workers/test/test_multi_sharedWorker_lifetimes_bfcache.html b/dom/workers/test/test_multi_sharedWorker_lifetimes_bfcache.html
index 5909d0cfda25..346950020f8a 100644
--- a/dom/workers/test/test_multi_sharedWorker_lifetimes_bfcache.html
+++ b/dom/workers/test/test_multi_sharedWorker_lifetimes_bfcache.html
@@ -127,7 +127,10 @@
             SpecialPowers.pushPermissions([{'type': 'storageAccessAPI', 'allow': 1, 'context': document}], () =>{
               SpecialPowers.wrap(document).requestStorageAccess().then(() => {
                 // If Fission is disabled, the pref is no-op.
-                SpecialPowers.pushPrefEnv({set: [["fission.bfcacheInParent", true]]}, () => {
+                SpecialPowers.pushPrefEnv({set: [
+                  ["fission.bfcacheInParent", true],
+                  ["privacy.partition.always_partition_third_party_non_cookie_storage", false],
+                ]}, () => {
                   testGenerator.next();
                 });
               }).then(() => {
diff --git a/dom/workers/test/test_multi_sharedWorker_lifetimes_nobfcache.html b/dom/workers/test/test_multi_sharedWorker_lifetimes_nobfcache.html
index 65b66a12d9c2..5049ead1a957 100644
--- a/dom/workers/test/test_multi_sharedWorker_lifetimes_nobfcache.html
+++ b/dom/workers/test/test_multi_sharedWorker_lifetimes_nobfcache.html
@@ -104,11 +104,15 @@
           // the iframe containing this page is isolated from first-party storage access,
           // which isolates BroadcastChannel communication.
           SpecialPowers.wrap(document).notifyUserGestureActivation();
-          SpecialPowers.pushPermissions([{'type': 'storageAccessAPI', 'allow': 1, 'context': document}], () =>{
-            SpecialPowers.wrap(document).requestStorageAccess().then(() => {
-              runTest();
-            }).then(() => {
-              SpecialPowers.removePermission("3rdPartyStorage^http://mochi.test:8888", "http://mochi.xorigin-test:8888");
+          SpecialPowers.pushPrefEnv({
+            set: [["privacy.partition.always_partition_third_party_non_cookie_storage", false]],
+          }).then(() => {
+            SpecialPowers.pushPermissions([{'type': 'storageAccessAPI', 'allow': 1, 'context': document}], () =>{
+              SpecialPowers.wrap(document).requestStorageAccess().then(() => {
+                runTest();
+              }).then(() => {
+                SpecialPowers.removePermission("3rdPartyStorage^http://mochi.test:8888", "http://mochi.xorigin-test:8888");
+              });
             });
           });
         } else {
diff --git a/dom/workers/test/test_subworkers_suspended.html b/dom/workers/test/test_subworkers_suspended.html
index bdbd6dd5050a..d5c62a28d04a 100644
--- a/dom/workers/test/test_subworkers_suspended.html
+++ b/dom/workers/test/test_subworkers_suspended.html
@@ -122,11 +122,15 @@
     // the iframe containing this page is isolated from first-party storage access,
     // which isolates BroadcastChannel communication.
     SpecialPowers.wrap(document).notifyUserGestureActivation();
-    SpecialPowers.pushPermissions([{'type': 'storageAccessAPI', 'allow': 1, 'context': document}], () =>{
-      SpecialPowers.wrap(document).requestStorageAccess().then(() => {
-        runTest();
-      }).then(() => {
-        SpecialPowers.removePermission("3rdPartyStorage^http://mochi.test:8888", "http://mochi.xorigin-test:8888");
+    SpecialPowers.pushPrefEnv({
+      set: [["privacy.partition.always_partition_third_party_non_cookie_storage", false]],
+    }).then(() => {
+      SpecialPowers.pushPermissions([{'type': 'storageAccessAPI', 'allow': 1, 'context': document}], () =>{
+        SpecialPowers.wrap(document).requestStorageAccess().then(() => {
+          runTest();
+        }).then(() => {
+          SpecialPowers.removePermission("3rdPartyStorage^http://mochi.test:8888", "http://mochi.xorigin-test:8888");
+        });
       });
     });
   } else {
diff --git a/dom/workers/test/test_suspend.html b/dom/workers/test/test_suspend.html
index 0e195dae807c..9ab1a6a7ec90 100644
--- a/dom/workers/test/test_suspend.html
+++ b/dom/workers/test/test_suspend.html
@@ -167,11 +167,15 @@
     // the iframe containing this page is isolated from first-party storage access,
     // which isolates BroadcastChannel communication.
     SpecialPowers.wrap(document).notifyUserGestureActivation();
-    SpecialPowers.pushPermissions([{'type': 'storageAccessAPI', 'allow': 1, 'context': document}], () =>{
-      SpecialPowers.wrap(document).requestStorageAccess().then(() => {
-        runTest();
-      }).then(() => {
-        SpecialPowers.removePermission("3rdPartyStorage^http://mochi.test:8888", "http://mochi.xorigin-test:8888");
+    SpecialPowers.pushPrefEnv({
+      set: [["privacy.partition.always_partition_third_party_non_cookie_storage", false]],
+    }).then(() => {
+      SpecialPowers.pushPermissions([{'type': 'storageAccessAPI', 'allow': 1, 'context': document}], () =>{
+        SpecialPowers.wrap(document).requestStorageAccess().then(() => {
+          runTest();
+        }).then(() => {
+          SpecialPowers.removePermission("3rdPartyStorage^http://mochi.test:8888", "http://mochi.xorigin-test:8888");
+        });
       });
     });
   } else {