Fix Bug 34921.

apps/presentationeditor/main/resources/less/layout.less

@@ -67,6 +67,10 @@ label {
     .cell {
         display: table-cell;
     }
+
+    .layout-resizer {
+        background-color: transparent;
+    }
 }
 
 .tooltip.main-info {

apps/spreadsheeteditor/main/resources/less/layout.less

@@ -55,6 +55,10 @@ label {
         border-top: 1px solid @gray-dark;
         border-left: 1px solid @gray-dark;
     }
+
+    .layout-resizer {
+        background-color: transparent;
+    }
 }
 
 .tooltip.main-info {