Admin pannel page layout issue in silverstripe

<%- if @topic_view.topic.tags.present? %>
<%= t 'js.tagging.tags' %>: <%- @topic_view.topic.tags.each do |t| %> <%= t %> <%- end %>
<% end %>

Silverstripe Version:
4.7

Question:
there is problem in admin panel layout page
when i refresh page then page layout is correct but first time when click on page ,layout not display properly