Text widgets on MacOS implement a large number of custom behaviours which do not work in JavaFX apps. For example: press and hold to bring up a character selection palette (the palette appears but the input widget doesn't react to it properly), integrated spelling/grammar checking, etc. It would be nice if JFX was able to match some of these features in the same way. Not sure what the best way to do that is - JFX is not AWT, but still, support for these things is something users want.

Additionally the right click menu in Modena doesn't look native. I know Modena isn't meant to be entirely native, but the look of the popup menus is different for no real reason.