Description

This is just a heads up and may depend on enviroment. See images for visual representation of the issue.
Seems like WP 4.9 will break some controls on certain modules.

Widget deletion is also affect as well as the columns and sections on the page!

Steps to reproduce

Install Beta Tester plugin for WordPress and update to the currently Nightly Build.
Edit a page with Elementor and add a module - tested with the Button widget.

Environment

WordPress 4.9-alpha-41635
Elementor v1.7.11
Elementor Pro v1.9.3
With or without any other plugins active
Any theme.