Preferences (etc) windows should have the same window hints as docks
I would like to be able to easily maximize the preferences and keyboard shortcuts windows, but they have window hints which make my stupid window manager disable maximization.
The stupid window manager is the current Ubuntu MATE default so I expect this small change would improve the user experience for a lot of people.
Maybe this should be a separate option, but it seems quicker and simpler and less confusing to just hint all windows the same so that we can manage them as we like instead of as weird modal utility somethings.