Hum i am not sure that a bug. When you open the title 2D, you have only two buttons activated. (i.e. choose a template and create a new title). After you have the window of the creation of the Title, after the title and only after you have an access at the button of the colors and for the Advanced Editor (i.e. Inkscape).
If it is really a bug, could you launch Openshot in a console, re-done the same operation and put it the output of the terminal. Thanks.