I have inherited a couple of university courses that use locked Microsoft word documents for the assignments (to keep formatting in place, etc.). I HATE these locked documents and the students without fail have many issues with them. When I taught high school I would use Google Docs and PDFs (both come with their own set of challenges) for my Canvas assignments that had formatting or structural items that needed to remain intact. Microsoft Office locked docs are difficult to navigate, not everyone has Adobe to access PDF versions of the assignments and other software doesn't always work, and Google Docs require too many steps to get to a workable document.
Are there any other options for creating assignments that require special formatting?