I encountered a similar behavior in NB 12.0 in the past. In order to circumnavigate this behavior, before creating a FXML file, a FX project, or any FX related activity, I first go to Tool->Options->Java-JavaFx tab, make sure it is activated and JavaFx SceneBuilder Integration is visibly seen.
On Tuesday, December 29, 2020, 7:05:20 AM GMT+3:30, Will Hartung <willhart...@gmail.com> wrote: On Mon, Dec 28, 2020 at 4:03 PM Scott Palmer <swpal...@gmail.com> wrote: I had similar issues until I manually launched SceneBuilder and opened some FXML files. After that it seemed to work. Scott One thing I think I noticed was that in 12.0, when I clicked on a FXML file, there was an Open and Edit option. If I double clicked on the file in 12.0, it would open SceneBuilder. But if I clicked the Edit menu option, it would open the XML file in NetBeans. On 12.2, I no longer see Open and Edit. I see Open, View, and Open Advanced... Neither View or Open Advanced... do anything. Oh, and this is on Mac OS Mojave. Thanks again, Will Hartung