Updated user profile images does not appear as avatar on visual task boards

Users have updated their photo in their user profile but they do not reflect on the avatar next to their names in visual task boards

All

This is due to the thumbnail file which is not found.  If you check in the browser console, you may see the following after opening https://<instance_name>.service-now.com/<sys_id>.iix?t=small compared to https://<instance_name>.service-now.com/<sys_id>.iix

One possible cause for this is a custom before insert/update business rule on the sys_attachment table.

Disable any custom before insert/update business rule.