Code field – No max width and therefore too wide

I’m using the ACF Code Field plugin in WordPress 4.6.1, inside ACF flexible content.
I’m using ACF Code Field version 1.6,
The problem I’m having with the ACF Code Field plugin already existed before the WordPress 4.7 update.

Problem:
When entering code inside the ACF Code Field, with lines longer than the window view, the Code Field stretches it’s width with the width of the added long code line. Again, the width of the ACF flexible content block is stretched because of the Code Field width.

Apart from the fact that it looks off and the ACF flexible content block is now wider than the window view, the flexible content block overlaps/blocks the ‘publish update’ button, preventing the user from being able to update the pages content.

Is this a known problem and is there any solution?
Thanks!