Enlarge the textareas in Settings > Formatting

do you have sample link to your site with this issue for us to see and analyze please?

Here is the link:
https://www.naenikon.ch/2014/wp-admin/edit.php?post_type=event&page=events-manager-options#formats

But you can’t open it, it’s in the *backend*: Events > Settings > Formattings > Events > Events Page > Default event list format header

I’ve put a screenshot here:
https://expirebox.com/download/4008ae80969337fb924ea87e1524ed7e.html

The file you’re looking for is definitely located here:
/events-manager/includes/css/events_manager_admin.css

Which version of Events Manager are you using?

Caimin, thank you for the complete path to the file (before I was searching in /wp-admin/includes/…)

I added the line #em-options-form textarea{ width: 95%; } to events_manager_admin.css file and now the textareas have a perfect width.
Why isn’t this a default setting?

I’m using Events Manager 5.6.2.

It’s not the default setting because not everyone would want that as the default styling.