Windows 10 Selecting Format, Styles and Formatting does not produce the dialogue box. Pressing F11 does not produce the dialogue box. I can only access Styles and formatting via the sidebar.
Unconfirmed with v5.0.1.2 under mint 17.2 x64. Windows only ?
Look at attachment 118235 [details] for a workaround. *** This bug has been marked as a duplicate of bug 83546 ***