Redmine

This probrem seems to be caused by the display: inline-flex; property applied to .icon and .icon-only.
To prevent the size of the SVG icons from shrinking, adding flex-shrink: 0; to the svg element resolves the problem.

diff --git a/app/assets/stylesheets/application.css b/app/assets/stylesheets/application.css
index 68297588e..88afa5d0c 100644
--- a/app/assets/stylesheets/application.css
+++ b/app/assets/stylesheets/application.css
@@ -1742,6 +1742,10 @@ td.gantt_selected_column .gantt_hdr,.gantt_selected_column_container {
   display: inline-flex;
   align-items: center;
   vertical-align: middle;
+
+  svg {
+    flex-shrink: 0;
+  }
 }

 a.icon:hover svg, a.icon-only:hover svg {