fix autofocus bug

src/components/Autocomplete.vue

@@ -174,7 +174,7 @@ import Menu from './Menu.vue'
           let self = this
 
           setTimeout(() => {
-          if (this.$vuetify.breakpoint.mdAndUp) self.$refs.autocomplete.$refs.input.select()
+          if (self.$vuetify.breakpoint.mdAndUp) self.$refs.autocomplete.$refs.input.select()
           else self.$refs.autocomplete.$refs.input.blur()
           this.suggesting = false
           }, 1)