fixed sidebar margin-top if .fixed not set

build/scss/_layout.scss

@@ -50,8 +50,10 @@ body,
       }
     }
 
-    .sidebar {
-      margin-top: $main-header-height;
+    &.fixed {
+      .sidebar {
+        margin-top: $main-header-height;
+      }
     }
 
     .brand-link {
@@ -122,8 +124,10 @@ body,
           }
         }
 
-        .sidebar {
-          margin-top: $main-header-height;
+        &.fixed {
+          .sidebar {
+            margin-top: $main-header-height;
+          }
         }
 
         .brand-link {

dist/css/adminlte.css

@@ -10178,7 +10178,7 @@ body,
   width: 250px;
 }
 
-.layout-navbar-fixed .wrapper .sidebar {
+.layout-navbar-fixed .wrapper.fixed .sidebar {
   margin-top: calc(3.5rem + 1px);
 }
 
@@ -10291,7 +10291,7 @@ body,
   width: 250px;
 }
 
-.layout-navbar-fixed .wrapper .sidebar {
+.layout-navbar-fixed .wrapper.fixed .sidebar {
   margin-top: calc(3.5rem + 1px);
 }
 
@@ -10403,7 +10403,7 @@ body,
     transition: width 0.3s ease-in-out;
     width: 250px;
   }
-  .layout-sm-navbar-fixed .wrapper .sidebar {
+  .layout-sm-navbar-fixed .wrapper.fixed .sidebar {
     margin-top: calc(3.5rem + 1px);
   }
   .layout-sm-navbar-fixed .wrapper .brand-link {
@@ -10494,7 +10494,7 @@ body,
     transition: width 0.3s ease-in-out;
     width: 250px;
   }
-  .layout-md-navbar-fixed .wrapper .sidebar {
+  .layout-md-navbar-fixed .wrapper.fixed .sidebar {
     margin-top: calc(3.5rem + 1px);
   }
   .layout-md-navbar-fixed .wrapper .brand-link {
@@ -10585,7 +10585,7 @@ body,
     transition: width 0.3s ease-in-out;
     width: 250px;
   }
-  .layout-lg-navbar-fixed .wrapper .sidebar {
+  .layout-lg-navbar-fixed .wrapper.fixed .sidebar {
     margin-top: calc(3.5rem + 1px);
   }
   .layout-lg-navbar-fixed .wrapper .brand-link {
@@ -10676,7 +10676,7 @@ body,
     transition: width 0.3s ease-in-out;
     width: 250px;
   }
-  .layout-xl-navbar-fixed .wrapper .sidebar {
+  .layout-xl-navbar-fixed .wrapper.fixed .sidebar {
     margin-top: calc(3.5rem + 1px);
   }
   .layout-xl-navbar-fixed .wrapper .brand-link {