Dropdown for comment actions in a ticket will be blocked by a comment below if the desired comment to perform an action on is not long enough. I tested on Firefox, Safari, Chrome, Opera GX, and Brave. with all of them having this issue.
Running on Ubuntu 22.04.2 LTS.
osTicket Version: v1.17.3 (ca95150) — Up to date
Web Server Software: Apache/2.4.52 (Ubuntu)
MySQL Version: 10.6.12
PHP Version: 8.1.2-1ubuntu2.11