I would prefer NOT to have a menu area at the top of the content window. The current design works, provides good feedback for the active tab and provides more room for the content display.
Yeah, many things just work. That makes me wonder why some people prefer a premium-priced Mercedes over a low-cost Toyota. Could it be the quality of the design? Compared to other world-class products in same price category (i.e. the IDEs of JetBrains) the attention to detail - the hallmark of a quality design - of ThBrain is wanting. If you don't follow the overarching principle that components with a similar functionality (in this case tabs and menus) should have a uniform design you don't get quality. It took Microsoft years and many iterations to reach this goal with its Office product line. The lessons to be learned are out there if one wants to find them.
Reinhard TB 9.0.263.0, WIN 10