There is no bug. if you have scrolled through other answers, topics here or in our main sites WPSLP forums, you will see that the number one reason you cannot change or save in the back end is because of a conflicting plug-in, usually one that minifies. One user reported the plug-in Smush it was the culprit. SLP already has the minify functionality . All plugins need to follow best practices , no plugin should break the functionality of another plugin. (Especially one that has been updated and been around for years such as ours).
Without the Plugin Environment info provided by you or the site url you are experiencing issues with we cannot provide any detailed suggestions other than try turning off the other plug-ins one by one to see if the issue is resolved.
