diff --git a/.changeset/tricky-buckets-sniff.md b/.changeset/tricky-buckets-sniff.md
new file mode 100644
index 0000000000..1b592677b9
--- /dev/null
+++ b/.changeset/tricky-buckets-sniff.md
@@ -0,0 +1,5 @@
+---
+'@swisspost/design-system-components': patch
+---
+
+Resolved an issue where `post-accordion` components placed within inactive tab panels caused animation-related exceptions.
\ No newline at end of file
diff --git a/packages/components/src/components/post-collapsible/post-collapsible.tsx b/packages/components/src/components/post-collapsible/post-collapsible.tsx
index 85b8a04165..cc8bb94515 100644
--- a/packages/components/src/components/post-collapsible/post-collapsible.tsx
+++ b/packages/components/src/components/post-collapsible/post-collapsible.tsx
@@ -77,7 +77,10 @@ export class PostCollapsible {
 
     await animation.finished;
 
-    animation.commitStyles();
+    const isVisible = this.host.offsetParent || this.host.offsetWidth || this.host.offsetHeight;
+    if (isVisible) {
+      animation.commitStyles();
+    }
 
     return open;
   }