I have upgraded my plugins recently and since then I have the kitchen sink and visual mode is gone where I can write posts. The comments are off. And on the plug-ins there is one tab added - drop-ins. The comment says "Drop-ins are advanced plugins in the /wp-content directory that replace WordPress functionality when present."
Why do I have this mysterious drop-in appeared on the website? Is because of this plug-in I am having the issues? How to get rid of this plugin?
Thanks in advance!