Hello ,
In somethings I need put html in javaFx， When I drag with the mouse the chart will lost ,The chart appears again when I release (This is an example of an official website.)，how to solve it ,thanks.
I have never seen or heard of such behavior. But I have never used JavaFX, either.
If you can reproduce the problem in a simple HTML page, we can help. But we have no experience with JavaFX, so we cannot help if the problem is specific to the JavaFX environment.