I have manually edited the ckeditor config file: packages/ckeditor/config.js to enable the Subscript and Superscript buttons by commenting out this line //config.removeButtons = 'Underline,Subscript,Superscript
this is working correctly in my local environment but when i deploy it on production, the Subscript and Superscript buttons are not available.
clearing cache (drush cc all, /civicrm/clearcache, browser cache) doesn't help, the only difference between my local and production is https.
How can i solve this issue?