fix history bugs

src/components/DictionaryView.vue

@@ -113,7 +113,7 @@ function navigate_to_article(self, source) {
   })
   .then(function(response){
     self.waiting_for_articles = false
-    this.replace_history()
+    self.replace_history()
     if (source) {
       self.$plausible.trackEvent('internal link incoming', {props: {origin: source}})
     }
@@ -273,16 +273,18 @@ export default {
   },
   methods: {
     replace_history: function() {
-          history.replaceState({article: this.article,
-                            search_results: {},
-                            lang: this.lang,
-                            error: null,
-                            scope: this.scope,
-                            article_info: this.article_info,
-                            page: this.page,
-                            perPage: this.perPage,
-                            selected: this.selected,
-                            inflection_suggestions: this.inflection_suggestions}, '')
+          history.replaceState({article: this.article, 
+                              search_results: this.search_results, 
+                              lang: this.lang, 
+                              error: this.error, 
+                              pos_selected: this.pos_selected,
+                              scope: this.scope,
+                              article_info: this.article_info,
+                              page: this.page,
+                              perPage: this.perPage,
+                              selected: this.selected,
+                              inflection_suggestions: this.inflection_suggestions}, '')
+
 
     },
     total_results: function() {