Why does Fusion mark a design as modified as soon as a sketch in the design history is opened for editing (and no edits are performed)? I have not modified the sketch and the design should not be marked as modified.
And on the same line of argument it would be great if we could lock files or be able to open them explicity as read only as submitted two years ago! A feature can't get any simpler than that. https://forums.autodesk.com/t5/fusion-360-ideastation/lock-file-or-mark-as-read-only/idi-p/6488833