Titles overlapping

Hello,

I am using WordPress 4.8.1 with Unyson 2.7.6 and Woffice 2.5.2, and I have a problem with overlapping titles on dropdown lists when editing a ticket on a page with [wp_support_plus], see picture at https://jdh.lu/wp-content/uploads/capture.jpg. “Unh?ng” should be “Attachments” in original text.

. I know that I can add custom CSS to solve this kind of issues, but I can’t find which sets I have to change.

Thank you very much.

Best Regards,
Robi

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