diff --git a/src/app/portal/features/site-footer/site-footer.component.html b/src/app/portal/features/site-footer/site-footer.component.html
index 2c5f7e8..5c12a67 100644
--- a/src/app/portal/features/site-footer/site-footer.component.html
+++ b/src/app/portal/features/site-footer/site-footer.component.html
@@ -1,4 +1,4 @@
-<nav class="bg-primary mt-2 w-full text-white" color="primary">
+<nav class="mt-2 w-full bg-primary text-white" color="primary">
   <div class="flex flex-wrap justify-around divide-x pb-5 pt-2 no-underline">
     <a mat-ripple routerLink="/" class="grow content-center"
       ><div class="flex w-full justify-center">
@@ -6,7 +6,7 @@
       </div>
       <div class="flex w-full justify-center">
         <div
-          class="text-quinary border-quinary mt-3 w-fit border-t pt-1.5 text-center text-4xl uppercase"
+          class="mt-3 w-fit border-t border-quinary pt-1.5 text-center text-4xl uppercase text-quinary"
         >
           Data Portal
         </div>
@@ -46,21 +46,21 @@
   class="icons-div mb-2 flex w-full flex-wrap justify-center text-center text-4xl no-underline"
 >
   <a
-    class="text-outline me-1.5 ms-2"
+    class="me-1.5 ms-2 text-outline"
     target="_blank"
     rel="noreferrer noopener"
     href="https://genomic.social/@ghga"
     ><mat-icon inline="true" fontSet="fab" fontIcon="fa-mastodon"></mat-icon
   ></a>
   <a
-    class="text-outline me-1.5 ms-2"
+    class="me-1.5 ms-2 text-outline"
     target="_blank"
     rel="noreferrer noopener"
     href="https://www.linkedin.com/company/the-german-human-genome-phenome-archive/"
     ><mat-icon inline="true" fontSet="fab" fontIcon="fa-linkedin"></mat-icon
   ></a>
   <a
-    class="text-outline me-1.5 ms-2"
+    class="me-1.5 ms-2 text-outline"
     target="_blank"
     rel="noreferrer noopener"
     href="https://bsky.app/profile/ghga.bsky.social"
@@ -68,21 +68,21 @@
     <mat-icon inline="true" fontSet="fab" fontIcon="fa-bluesky"></mat-icon
   ></a>
   <a
-    class="text-outline me-1.5 ms-2"
+    class="me-1.5 ms-2 text-outline"
     target="_blank"
     rel="noreferrer noopener"
     href="https://github.com/ghga-de"
     ><mat-icon inline="true" fontSet="fab" fontIcon="fa-github"></mat-icon
   ></a>
   <a
-    class="text-outline me-1.5 ms-2"
+    class="me-1.5 ms-2 text-outline"
     target="_blank"
     rel="noreferrer noopener"
     href="https://www.youtube.com/channel/UC7Yqi4gBl86drcUxwwEe6EA"
     ><mat-icon inline="true" fontSet="fab" fontIcon="fa-youtube"></mat-icon
   ></a>
   <a
-    class="text-outline me-1.5 ms-2"
+    class="me-1.5 ms-2 text-outline"
     target="_blank"
     rel="noreferrer noopener"
     href="https://www.ghga.de/about-us/contact"
diff --git a/src/app/portal/features/site-header/site-header.component.html b/src/app/portal/features/site-header/site-header.component.html
index c2401fd..f9b6ac3 100644
--- a/src/app/portal/features/site-header/site-header.component.html
+++ b/src/app/portal/features/site-header/site-header.component.html
@@ -8,7 +8,7 @@
           alt="GHGA Logo"
         />
         <div class="ms-2 border-l ps-2 pt-1 uppercase">
-          <span class="text-quinary border-quinary text-3xl leading-3 tracking-wider"
+          <span class="border-quinary text-3xl leading-3 tracking-wider text-quinary"
             >Data</span
           ><br /><span>Portal</span>
         </div></a
diff --git a/src/mocks/mockServiceWorker.js b/src/mocks/mockServiceWorker.js
index fead0b3..2c0b0fb 100644
--- a/src/mocks/mockServiceWorker.js
+++ b/src/mocks/mockServiceWorker.js
@@ -8,8 +8,8 @@
  * - Please do NOT serve this file on production.
  */
 
-const PACKAGE_VERSION = '2.6.6'
-const INTEGRITY_CHECKSUM = 'ca7800994cc8bfb5eb961e037c877074'
+const PACKAGE_VERSION = '2.6.9'
+const INTEGRITY_CHECKSUM = '00729d72e3b82faf54ca8b9621dbb96f'
 const IS_MOCKED_RESPONSE = Symbol('isMockedResponse')
 const activeClientIds = new Set()
 
@@ -199,7 +199,19 @@ async function getResponse(event, client, requestId) {
     // Remove the "accept" header value that marked this request as passthrough.
     // This prevents request alteration and also keeps it compliant with the
     // user-defined CORS policies.
-    headers.delete('accept', 'msw/passthrough')
+    const acceptHeader = headers.get('accept')
+    if (acceptHeader) {
+      const values = acceptHeader.split(',').map((value) => value.trim())
+      const filteredValues = values.filter(
+        (value) => value !== 'msw/passthrough',
+      )
+
+      if (filteredValues.length > 0) {
+        headers.set('accept', filteredValues.join(', '))
+      } else {
+        headers.delete('accept')
+      }
+    }
 
     return fetch(requestClone, { headers })
   }