In case you are Caching .html files with .htacess in your WordPress Install and your WP-Admin is being browser cached.
If you need to refresh the browser so the backend loads properly. Just apply the below code to the WP-Admin .htaccess Custom Code.
It will prevent .html, .htm, .js and .css from being Browser Cached in the WP-Admin area.
#Browser Cache WP-Admin Fix
<filesMatch "\.(html|htm|js|css)$">
FileETag None
<ifModule mod_headers.c>
Header unset ETag
Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
Header set Pragma "no-cache"
Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"
</ifModule>
</filesMatch>