fix settings disappearing bug

src/components/TopBar.vue

@@ -8,7 +8,7 @@
       <v-divider vertical/>
       <v-menu :close-on-content-click="false" v-model="settingsMenu">
           <template v-slot:activator= "{ on, attrs }">
-              <v-btn v-if="$route.name != 'about'" v-bind="attrs" v-on="on" text width="210"><v-icon left>settings</v-icon>{{$t("settings.title")}}<v-icon right>expand_more</v-icon></v-btn>
+              <v-btn v-show="$route.name != 'about'" v-bind="attrs" v-on="on" text width="210"><v-icon left>settings</v-icon>{{$t("settings.title")}}<v-icon right>expand_more</v-icon></v-btn>
           </template>
           <v-card>
               <v-card-text>