Минимальная ширина стилей в тулбаре выставлена таким образом, чтоб отображался хотя бы 1 стиль.

apps/documenteditor/main/app/template/Toolbar.template

@@ -191,7 +191,7 @@
                 <span class="btn-placeholder" id="id-toolbar-full-placeholder-btn-mailrecepients"></span>
             </div>
         </div>
-        <div class="toolbar-group" id="id-toolbar-full-placeholder-field-styles" style="width: 100%; min-width: 100px;">
+        <div class="toolbar-group" id="id-toolbar-full-placeholder-field-styles" style="width: 100%; min-width: 160px;">
         </div>
         <div class="toolbar-group no-mask">
             <div class="toolbar-row">

apps/presentationeditor/main/app/template/Toolbar.template

@@ -196,7 +196,7 @@
             <span class="btn-placeholder split" id="id-toolbar-full-placeholder-btn-slidesize"></span>
         </div>
     </div>
-    <div class="toolbar-group" id="id-toolbar-full-placeholder-field-styles" style="width: 100%; min-width: 100px;">
+    <div class="toolbar-group" id="id-toolbar-full-placeholder-field-styles" style="width: 100%; min-width: 140px;">
     </div>
     <div class="toolbar-group no-mask">
         <div class="toolbar-row">

apps/spreadsheeteditor/main/app/template/Toolbar.template

@@ -283,7 +283,7 @@
                 <span class="btn-placeholder" id="id-toolbar-full-placeholder-btn-table-tpl"></span>
             </div>
         </div>
-        <div class="toolbar-group" id="id-toolbar-full-placeholder-field-styles" style="width: 100%; min-width: 100px;">
+        <div class="toolbar-group" id="id-toolbar-full-placeholder-field-styles" style="width: 100%; min-width: 160px;">
         </div>
         <div class="toolbar-group no-mask">
             <div class="toolbar-row">