Clicking autocomplete will return focus to text area, make the autocomplete box disappear after clicking on a name.

src/components/post_status_form/post_status_form.js

@@ -77,6 +77,9 @@ const PostStatusForm = {
   methods: {
     replace (replacement) {
       this.newStatus.status = Completion.replaceWord(this.newStatus.status, this.wordAtCaret, replacement)
+      const el = this.$el.querySelector('textarea')
+      el.focus()
+      this.caret = 0
     },
     setCaret ({target: {selectionStart}}) {
       this.caret = selectionStart

src/components/post_status_form/post_status_form.vue

@@ -6,7 +6,7 @@
       </div>
       <div style="position:relative;" v-if="candidates">
         <div class="autocomplete-panel base05-background">
-          <div v-for="candidate in candidates" @click="replace('@' + candidate.screen_name)" class="autocomplete base01">
+          <div v-for="candidate in candidates" @click="replace('@' + candidate.screen_name + ' ')" class="autocomplete base01">
             <img :src="candidate.img"></img>
             <span>
               @{{candidate.screen_name}}