User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0
Steps to reproduce:
Saved an mage or downloaded a video from Facebook-Instagram or Twitter.
The image does not get saved right away. The dot-symbol for "stuck" appears on the download arrow on the top bar. When I press the round arrow to retry, it gets downloaded.
Any video that I download from these sites (using the download helper sites) do not get downloaded. A message box showing a message of "unknown error" appears as soon as I click "Save link as".
(IMPORTANT NOTE: This issue occurs only after I have synced Firrefox with my account. On a fresh download, this does not happen. However, it is not an issue with extensions. When I restart in safe mode with extensions disabled, the issue still persists.)
The images should get saved without any error and videos should get downloaded as has been happening without any problem till Firefox 80.