JavaFX NullpointerException crashes GUI of Steuertabelle

[cediwelli]

What happens:
The Steuertabelle will gray-out and loses all of its contents. Adding new rows or trying to use any of the other
controls on the right is ineffective.

How it looks:
https://imgur.com/a/Z2GLbuj

How to reproduce:
I can not reproduce the Error easily. It usually happens when deleting rows from the Steuertabelle but not always.

I am on Linux cwm10 5.10.0-18-amd64 #1 SMP Debian 5.10.140-1 (2022-09-02) x86_64 GNU/Linux
Java version:

openjdk 17.0.4 2022-07-19
OpenJDK Runtime Environment (build 17.0.4+8-Debian-1deb11u1)
OpenJDK 64-Bit Server VM (build 17.0.4+8-Debian-1deb11u1, mixed mode, sharing)

terminal output:

Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.control.TableCell.tableColumnProperty()" because the return value of "javafx.scene.control.skin.TableCellSkin.getSkinnable()" is null
	at javafx.scene.control.skin.TableCellSkin.tableColumnProperty(TableCellSkin.java:97)
	at javafx.scene.control.skin.TableCellSkinBase.getTableColumn(TableCellSkinBase.java:123)
	at javafx.scene.control.skin.TableCellSkinBase.dispose(TableCellSkinBase.java:136)
	at javafx.scene.control.skin.TableCellSkin.dispose(TableCellSkin.java:88)
	at javafx.scene.control.Control$2.invalidated(Control.java:267)
	at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
	at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:147)
	at javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)
	at javafx.scene.control.Control$2.set(Control.java:250)
	at javafx.scene.control.Control$2.set(Control.java:233)
	at javafx.scene.control.Control.setSkin(Control.java:230)
	at javafx.scene.control.skin.TableRowSkinBase.recreateCells(TableRowSkinBase.java:715)
	at javafx.scene.control.skin.TableRowSkinBase.updateCells(TableRowSkinBase.java:505)
	at javafx.scene.control.skin.TableRowSkinBase.checkState(TableRowSkinBase.java:649)
	at javafx.scene.control.skin.TableRowSkinBase.computePrefHeight(TableRowSkinBase.java:588)
	at javafx.scene.control.Control.computePrefHeight(Control.java:570)
	at javafx.scene.Parent.prefHeight(Parent.java:1037)
	at javafx.scene.layout.Region.prefHeight(Region.java:1559)
	at javafx.scene.control.skin.VirtualFlow.resizeCellSize(VirtualFlow.java:1863)
	at javafx.scene.control.skin.VirtualFlow.addLeadingCells(VirtualFlow.java:1948)
	at javafx.scene.control.skin.VirtualFlow.layoutChildren(VirtualFlow.java:1250)
	at javafx.scene.Parent.layout(Parent.java:1204)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Scene.doLayoutPass(Scene.java:576)
	at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2482)
	at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:412)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:411)
	at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:438)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:519)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:499)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:492)
	at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:320)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
	at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
	at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.control.TableCell.tableColumnProperty()" because the return value of "javafx.scene.control.skin.TableCellSkin.getSkinnable()" is null
	at javafx.scene.control.skin.TableCellSkin.tableColumnProperty(TableCellSkin.java:97)
	at javafx.scene.control.skin.TableCellSkinBase.getTableColumn(TableCellSkinBase.java:123)
	at javafx.scene.control.skin.TableCellSkinBase.dispose(TableCellSkinBase.java:136)
	at javafx.scene.control.skin.TableCellSkin.dispose(TableCellSkin.java:88)
	at javafx.scene.control.Control$2.invalidated(Control.java:267)
	at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
	at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:147)
	at javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)
	at javafx.scene.control.Control$2.set(Control.java:250)
	at javafx.scene.control.Control$2.set(Control.java:233)
	at javafx.scene.control.Control.setSkin(Control.java:230)
	at javafx.scene.control.skin.TableRowSkinBase.recreateCells(TableRowSkinBase.java:715)
	at javafx.scene.control.skin.TableRowSkinBase.updateCells(TableRowSkinBase.java:505)
	at javafx.scene.control.skin.TableRowSkinBase.checkState(TableRowSkinBase.java:649)
	at javafx.scene.control.skin.TableRowSkinBase.computePrefHeight(TableRowSkinBase.java:588)
	at javafx.scene.control.Control.computePrefHeight(Control.java:570)
	at javafx.scene.Parent.prefHeight(Parent.java:1037)
	at javafx.scene.layout.Region.prefHeight(Region.java:1559)
	at javafx.scene.control.skin.VirtualFlow.resizeCellSize(VirtualFlow.java:1863)
	at javafx.scene.control.skin.VirtualFlow.addLeadingCells(VirtualFlow.java:1948)
	at javafx.scene.control.skin.VirtualFlow.layoutChildren(VirtualFlow.java:1250)
	at javafx.scene.control.skin.VirtualFlow$5.invalidated(VirtualFlow.java:837)
	at javafx.beans.property.IntegerPropertyBase.markInvalid(IntegerPropertyBase.java:113)
	at javafx.beans.property.IntegerPropertyBase.set(IntegerPropertyBase.java:148)
	at javafx.scene.control.skin.VirtualFlow.setCellCount(VirtualFlow.java:855)
	at javafx.scene.control.skin.TableViewSkinBase.updateItemCount(TableViewSkinBase.java:549)
	at javafx.scene.control.skin.VirtualContainerBase.checkState(VirtualContainerBase.java:170)
	at javafx.scene.control.skin.VirtualContainerBase.layoutChildren(VirtualContainerBase.java:145)
	at javafx.scene.control.skin.TableViewSkinBase.layoutChildren(TableViewSkinBase.java:407)
	at javafx.scene.control.Control.layoutChildren(Control.java:601)
	at javafx.scene.Parent.layout(Parent.java:1204)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Parent.layout(Parent.java:1211)
	at javafx.scene.Scene.doLayoutPass(Scene.java:576)
	at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2482)
	at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:412)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:411)
	at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:438)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:519)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:499)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:492)
	at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:320)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
	at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
	at java.base/java.lang.Thread.run(Thread.java:833)