Keep text box from growing: Use Lock -> Move, then it won't grow. Indication: text editing background changes color when content exceeds text box size; red tint if box will not grow (locked) and accent-compliment color if the text box will grow.
Popup menu: Text -> Font -> Font Panel, bottom right of the Font Panel.
Manage Menus: the item on the User Library menu only relates to managing the user library menu, nothing to do with any other menus. Context is key there.
Keyboard Shortcuts -- too long a phrase in English, Advantage of two phrases, doubles odds a new user will discover when searching Help.
EazyDraw Preferences -- don't seek something complicated. It is ultra trivial. Go to Help, use search phrase "Defaults Condensed" . Practice on Color and Style, experiment and you'll see how simple and easy to use. The same system applies on all the parameter palettes. And remember: if you are not using these much shorten your parameter palette to save the screen space.
Tool Tip time: adjust on Preferences panel. It takes a quit and restart to adjust - that is all on macOS, not EazyDraw really.