Please do the following to reproduce the issue:
- Login as admin and then click on the Tickets menu item,
- Click on Delete button without having to select any records in the table
- Now here is the issue: you will see the interface freezes (and needs to reload/refresh the page to work again).
This issue will not be happened if we have already selected at least one record from the table.
It seems this issue happened also in another pages that display the records in the table (List page). Hopefully you can fix it, thanks.