Since it sounds like the issue Appears when editing/creating a page, can you see the “ghost block” in the live site as well? I.E, do the widgets float to the left on the live site?

Which steps have led to this problem or which steps have you tried so far to resolve it?
Also, if you could provide the following, it’ll be great:
Some screenshots / a Screencast ?of the issue.

As the first step for troubleshooting, try to use “Safe Mode”.

It’s a safe environment that isolates Elementor and WordPress from all themes and plugins, it helps multiple users solve issues like this.

Read about the feature here: https://elementor.com/help/what-is-safe-mode/

If it did help, then there is a plugin/theme conflict that causes this issue, try to deactivate all plugins and turn them one by one till you find the culprit.

Hope it helps.