Firefly pushed through an update that included the new task annotation software. The purpose of this software is to allow teachers to mark down notes on the student's work, with the original work still being protected.
We have submitted a feature request to bring in the ability to choose whether
or not to download the files in their original format.
Until then, the work around is to go to the Task overview page and for a
specific task, on the right of the page is the 'More Actions' button. Clicking
this will open a drop-down menu, with one of the actions available being
"Download all student files". This will download all files students
have uploaded in response to the task. Unfortunately using this workaround you
cannot download a single student at a time, but if you want their .docx files
this should suffice.