Менеджер загрузок (S3) - это дополнение к браузеру Firefox , которое поможет вам контролировать свои Загрузки
Это новая жизнь для старого известного дополнения Download Statusbar , которое, в связи с критическими изменениями в Firefox 26+, перестало работать
Catalina Public Beta 6 was released a few days ago. It broke Download Manager S3. Downloads no longer appear in the Download History Window/Tab. And of course the Download bar can only display what is in the download history, so it doesn't work either. It will display but it is empty.
Downloads continue to occur but the only way to see them is in the Firefox Download Window.
I have used Download Manager S3 for many years and depend upon it to monitor and manage my downloads.
Public Beta Catalina V6 is Developer Beta V7.
Can you please get a copy of the beta Mac OS, load it and tweak your code to make Download Manager S3 work again under Catalina. The preferences still show up, the menu bar icon still works, the download manager window appears. There are just now downloads showing up even though files are downloading.
I really hope you can fix your software.