fixed a lot of bugs with emoji picker, improved relevant components

src/components/tab_switcher/tab_switcher.js

@@ -4,7 +4,26 @@ import './tab_switcher.scss'
 
 export default Vue.component('tab-switcher', {
   name: 'TabSwitcher',
-  props: ['renderOnlyFocused', 'onSwitch', 'customActive'],
+  props: {
+    renderOnlyFocused: {
+      required: false,
+      type: Boolean,
+      default: false
+    },
+    onSwitch: {
+      required: false,
+      type: Function
+    },
+    customActive: {
+      required: false,
+      type: String
+    },
+    scrollableTabs: {
+      required: false,
+      type: Boolean,
+      default: false
+    }
+  },
   data () {
     return {
       active: this.$slots.default.findIndex(_ => _.tag)
@@ -18,7 +37,8 @@ export default Vue.component('tab-switcher', {
   },
   methods: {
     activateTab (index, dataset) {
-      return () => {
+      return (e) => {
+        e.preventDefault()
         if (typeof this.onSwitch === 'function') {
           this.onSwitch.call(null, index, this.$slots.default[index].elm.dataset)
         }
@@ -85,7 +105,7 @@ export default Vue.component('tab-switcher', {
         <div class="tabs">
           {tabs}
         </div>
-        <div class="contents">
+        <div class={'contents' + (this.scrollableTabs ? ' scrollable-tabs' : '')}>
           {contents}
         </div>
       </div>

src/components/tab_switcher/tab_switcher.scss

@@ -1,10 +1,21 @@
 @import '../../_variables.scss';
 
 .tab-switcher {
+  display: flex;
+  flex-direction: column;
+
   .contents {
+    flex: 1 0 auto;
+    min-height: 0px;
+
     .hidden {
       display: none;
     }
+
+    &.scrollable-tabs {
+      flex-basis: 0;
+      overflow-y: auto;
+    }
   }
   .tabs {
     display: flex;