Egor, I see the Area Type Options, but I think I have uncovered the detail that is throwing off the intended behavior. As a font developer, I would expect the “ascent” setting to be governed by the assigned vertical metrics for ascenders in the font, but Illustrator appears to be determining the ascent by measuring the uppermost contour of a single letter, apparently the lowercase "d".
Egor, I see the Area Type Options, but I think I have uncovered the detail that is throwing off the intended behavior. As a font developer, I would expect the “ascent” setting to be governed by the assigned vertical metrics for ascenders in the font, but Illustrator appears to be determining the ascent by measuring the uppermost contour of a single letter, apparently the lowercase "d".