Avoid causing a loop when going back after changing the page size

src/components/Navigation/ElementNavigation.vue

@@ -209,16 +209,14 @@ export default {
       // Clone the query to avoid mutating the original argument
       const newQuery = { ...query }
 
-      // If the store did not yet have a page size and there is one in the URL, store it there, or set to the default size
-      if (this.navigationPageSize === null) {
-        let pageSize = DEFAULT_PAGE_SIZE
-        if (query.page_size) {
-          pageSize = Number.parseInt(query.page_size, 10)
-          // Reject invalid page sizes
-          if (!NAVIGATION_PAGE_SIZES.includes(pageSize)) pageSize = DEFAULT_PAGE_SIZE
-        }
-        this.setPageSize(pageSize)
+      // If there is a page size in the URL, store it, otherwise reset to the default size
+      let pageSize = DEFAULT_PAGE_SIZE
+      if (query.page_size) {
+        pageSize = Number.parseInt(query.page_size, 10)
+        // Reject invalid page sizes
+        if (!NAVIGATION_PAGE_SIZES.includes(pageSize)) pageSize = DEFAULT_PAGE_SIZE
       }
+      if (this.navigationPageSize !== pageSize) this.setPageSize(pageSize)
       if (query.page_size) delete newQuery.page_size
 
       if (query.page) {