Confirmation not waiting when deleting sections

I've noticed an issue on two installations of CMS Builder v3.84 that doesn't happen on an installation of CMSB v3.82.

If I click to 'erase' a section from CMS Setup > Database, the confirmation window appears very briefly but the section is then deleted and the message disappears so the table is deleted without confirming.

Let me know if you need any more information.

Thanks, Paul.