As is the case for https://bugs.launchpad.net/ubuntu-mate/+bug/1717528 , my Caja's Edit -> Preferences -> 'Preview' tab -> 'Show Thumbnails' is set to 'Always' and 'Only for files smaller than' is set to 4GB.
As is the case for https:/ /bugs.launchpad .net/ubuntu- mate/+bug/ 1717528 , my Caja's Edit -> Preferences -> 'Preview' tab -> 'Show Thumbnails' is set to 'Always' and 'Only for files smaller than' is set to 4GB.