Please go back to using
https://cdn.tinymce.com/4/tinymce.min.js
https://www.tinymce.com/docs/changelog/
Official TInyMCE Version 4.7.0 October 3, 2017
ADDED new mobile ui that is specifically designed for mobile devices.
Updated the default skin to be more modern and white since white is preferred by most implementations.
Restructured the default menus to be more similar to common office suites like Google Docs.
FIXED so theme can be set to false on both inline and iframe editor modes.
FIXED bug where inline editor would add/remove the visualblocks css multiple times.
FIXED bug where selection wouldn't be properly restored when editor lost focus and commands where invoked.
FIXED bug where toc plugin would generate id:s for headers even though a toc wasn't inserted into the content.
FIXED bug where is wasn't possible to drag/drop contents within the editor if paste_data_images where set to true.
FIXED bug where getParam and close in WindowManager would get the first opened window instead of the last opened window.
FIXED bug where delete would delete between cells inside a table in Firefox.