Redmine

The reported issue is reproducible when using the Alternate theme.

This problem could be reproduced in the Default theme.
Here is the diff that fixes the problem.

diff --git a/app/assets/stylesheets/responsive.css b/app/assets/stylesheets/responsive.css
index 4eff84187..ec580037c 100644
--- a/app/assets/stylesheets/responsive.css
+++ b/app/assets/stylesheets/responsive.css
@@ -440,6 +440,10 @@
     color: white;
   }

+  .flyout-menu .icon svg {
+    stroke: white;
+  }
+
   .flyout-menu ul li a:hover {
     text-decoration: none;
   }
@@ -560,8 +564,10 @@
   #admin-menu a.selected {
     line-height: 40px;
     padding: 0;
-    padding-left: 32px !important;
-    background-position: 8px 50%;
+  }
+
+  #admin-menu a.icon:not(:has(svg)) {
+    padding-left: 20px !important;
   }

   /*----------------------------------------*\

After change:

Setting the target version to 6.0.4.