Hello, I am the author of that thread, I am not sure how this is relevant. If I change to 2D, I still have problems, as I have written in my 2nd post here (the one just above yours). Am I missing something?
By the way, as you can see, I do follow the suggestion given in the solution of your link, namely the line
System.setProperty("jogl.disable.openglcore", "true");