diff --git a/src/lib/filtering/filter-card/filter-card.component.html b/src/lib/filtering/filter-card/filter-card.component.html
index dd72c09..9238f21 100644
--- a/src/lib/filtering/filter-card/filter-card.component.html
+++ b/src/lib/filtering/filter-card/filter-card.component.html
@@ -14,7 +14,7 @@
 
     @if (primaryFilters$ | async; as filters) {
         <div class="filter-content">
-            @for (filter of filters; track filter) {
+            @for (filter of filters; track filter.id) {
                 <ng-container
                     [ngTemplateOutletContext]="{
                         filter: filter,
@@ -33,7 +33,7 @@
                 <div class="all-caps-label" translate="filter-menu.filter-options"></div>
             </div>
 
-            @for (filter of secondaryGroup.filters; track filter) {
+            @for (filter of secondaryGroup.filters; track filter.id) {
                 <ng-container
                     [ngTemplateOutletContext]="{
                         filter: filter,
diff --git a/src/lib/filtering/filter-utils.ts b/src/lib/filtering/filter-utils.ts
index 4dc8729..eef3b4a 100644
--- a/src/lib/filtering/filter-utils.ts
+++ b/src/lib/filtering/filter-utils.ts
@@ -16,6 +16,7 @@ function copySettings(oldFilters: INestedFilter[], newFilters: INestedFilter[])
         const newFilter = newFilters.find(f => f.id === filter.id);
         if (newFilter) {
             newFilter.checked = filter.checked;
+            newFilter.expanded = filter.expanded;
             newFilter.indeterminate = filter.indeterminate;
             if (filter.children && newFilter.children) {
                 copySettings(filter.children, newFilter.children);