Поправка бага в Firefox

client/components/App.vue

@@ -268,6 +268,7 @@ body, html, #app {
     padding: 0 !important;
     display: flex;
     flex-direction: column;
+    overflow: hidden;
 }
 
 @font-face {

client/components/Reader/HelpPage/HelpPage.vue

@@ -82,10 +82,12 @@ class HelpPage extends Vue {
     flex: 1;
     display: flex;
     flex-direction: column;
+    overflow: hidden;
 }
 
 .el-tab-pane {
     flex: 1;
     display: flex;
+    overflow: hidden;
 }
 </style>