diff --git a/css/leptonChrome.css b/css/leptonChrome.css
index 3f0bbdd..293001e 100644
--- a/css/leptonChrome.css
+++ b/css/leptonChrome.css
@@ -68,6 +68,11 @@
     margin-left: -1px;
   }
 
+  /*= Titlebar Container Size at photon-style compact maximized #384 ===========*/
+  :root[tabsintitlebar][sizemode="maximized"] #titlebar {
+    appearance: unset !important;
+  }
+
   /*= Disabled menu background color ===========================================*/
   menuitem[disabled="true"],
   menu[disabled="true"] {
diff --git a/src/compatibility/_theme.scss b/src/compatibility/_theme.scss
index e30c33f..e8c3691 100644
--- a/src/compatibility/_theme.scss
+++ b/src/compatibility/_theme.scss
@@ -37,6 +37,11 @@
   margin-left: -1px;
 }
 
+/*= Titlebar Container Size at photon-style compact maximized #384 ===========*/
+:root[tabsintitlebar][sizemode="maximized"] #titlebar {
+  appearance: unset !important;
+}
+
 /*= Disabled menu background color ===========================================*/
 menuitem,
 menu {