Visible paragraphs' last index is [-1] but visibleParIndex was [0]

[fangzhongwei]

1.Run JavaKeywordsDemo to open the "Java Keywords Demo" window.
2.Copy one line text, such as "System.err.println("Warning: empty string as argument");".
3.Press Ctrl + A to select whole text, then Press Ctrl + V to paste, got follow error.
4.It only happens when paste for the first time.

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Visible paragraphs' last index is [-1] but visibleParIndex was [0]
at org.fxmisc.richtext.GenericStyledArea.visibleParToAllParIndex(GenericStyledArea.java:982)
at org.fxmisc.richtext.ViewActions.firstVisibleParToAllParIndex(ViewActions.java:284)
at org.fxmisc.richtext.LineNumberFactory.deleteParagraphCheck(LineNumberFactory.java:148)
at org.fxmisc.richtext.LineNumberFactory.lambda$new$1(LineNumberFactory.java:91)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run$$$capture(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:185)
at java.lang.Thread.run(Thread.java:748)

[Siedlerchr]

Yep, We encountered the same with the XML Editor highlighting JabRef/jabref#7860

[Siedlerchr]

Seems like its's already fixed in master #1021