src/features/CategoryFilter/ui/CategoryFilter.svelte

@@ -5,7 +5,7 @@ import { categoryFilterStore } from '../store/categoryFilterStore';
 const { categories } = $derived($categoryFilterStore);
 
 function didCategoryToggle(categoryId: string) {
-    if (categories?.find(category => category.id === categoryId)) {
+    if (categories?.find(category => category.id === categoryId)?.selected) {
         categoryFilterStore.deselectCategory(categoryId);
     } else {
         categoryFilterStore.selectCategory(categoryId);

src/shared/ui/CheckboxFilter/CheckboxFilter.svelte

@@ -129,7 +129,7 @@ const hasSelection = $derived(selectedCount > 0);
                             <Checkbox
                                 id={category.id}
                                 checked={category.selected}
-                                onchange={() => onCategoryToggle(category.id)}
+                                onclick={() => onCategoryToggle(category.id)}
                                 class="
                                     shrink-0 cursor-pointer transition-all duration-150 ease-out
                                     data-[state=checked]:scale-100