I was just helping someone who couldn't figure out how to apply a text style to the textboxes in Draw. I only discovered ONE way to do it - double-clicking on the sidebar's Style choices. [Format - Style - Manage Styles can take you there which is nice, but not necessarily intuitive since we want to apply a style, not manage them.] In Writer we have a few other places that provide a limited set of choices: the toolbar, a styles menu, and a paragraph right-click option. But only the sidebar's styles gives you the full choice to apply any style - only by double-clicking. So, ultimately this isn't THAT unintuitive and it is fairly consistent, so I'm marking this as a low priority. But it is limiting to have only a single way - that limits discoverability. Of course, in Draw you can't apply a style to a paragraph, only to an entire textbox. Since the style will affect the text attributes, I think it would make sense to have something in the textbox/shapes "Text Attributes" dialog that allows selecting which style is applied. Secondly, it is probably good to add an "Apply" to the right-click on the style sidebar's choices which functions the same as a double-click. Thirdly, Draw's "edit style" textbox right-click option could be converted to the "Styles" pop-out that gives more choices (like manage). Only having "edit" available seems a bit dangerous since it affects the whole document. Fourthly, it might make sense to add it to the "Text Formatting" toolbar, although it doesn't apply to paragraphs - so not necessarily appropriate here.
Created attachment 183501 [details] DrawTextStyles.odg: two textboxes with different style applied.