Branko Petric focused on improving user experience and interface clarity in the pkp/ojs repository by addressing a persistent UI inconsistency. He implemented a targeted bug fix using PHP and templating skills, updating the template logic to check for items in the parsed citations LazyCollection before rendering citation sections. This change prevented the display of empty citation sections when no citations were present, resulting in a cleaner and more reliable front end. Branko’s work demonstrated attention to detail in front end development and contributed to the overall stability of the application, though his contributions during this period were limited to this specific fix.