fix: header not sticky anymore

src/main/frontend/components/header.css

@@ -9,7 +9,6 @@
   justify-content: space-between;
   flex: 0 0 auto;
   position: sticky;
-  position: -webkit-sticky;
   top: 0;
   left: 0;
   right: 0;

src/main/frontend/components/sidebar.css

@@ -30,6 +30,9 @@
 }
 
 #main-container {
+    /* Hack: (overflow-y) to fix sticky header not working */
+    /* To reproduce: quick creating blocks */
+    overflow-y: hidden;
     position: relative;
     height: 100%;
     transition: padding-left .3s;