NullPointerException in TableCellSkin

[bartoszbosak]

I am using the most recent JavaFX build (v13), but the reported problem seems to exist also in previous versions.

From time to time, the following exception is thrown by the gui thread:

java.lang.NullPointerException
	at javafx.controls/javafx.scene.control.skin.TableCellSkin.tableColumnProperty(TableCellSkin.java:97)
	at javafx.controls/javafx.scene.control.skin.TableCellSkinBase.getTableColumn(TableCellSkinBase.java:123)
	at javafx.controls/javafx.scene.control.skin.TableCellSkinBase.dispose(TableCellSkinBase.java:136)
	at javafx.controls/javafx.scene.control.skin.TableCellSkin.dispose(TableCellSkin.java:88)
	at javafx.controls/javafx.scene.control.Control$2.invalidated(Control.java:267)
	at javafx.base/javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
	at javafx.base/javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:147)
	at javafx.graphics/javafx.css.StyleableObjectProperty.set(StyleableObjectProperty.java:82)
	at javafx.controls/javafx.scene.control.Control$2.set(Control.java:250)
	at javafx.controls/javafx.scene.control.Control$2.set(Control.java:233)
	at javafx.controls/javafx.scene.control.Control.setSkin(Control.java:230)
	at javafx.controls/javafx.scene.control.skin.TableRowSkinBase.recreateCells(TableRowSkinBase.java:715)
	at javafx.controls/javafx.scene.control.skin.TableRowSkinBase.updateCells(TableRowSkinBase.java:505)
	at javafx.controls/javafx.scene.control.skin.TableRowSkinBase.checkState(TableRowSkinBase.java:649)
	at javafx.controls/javafx.scene.control.skin.TableRowSkinBase.computePrefHeight(TableRowSkinBase.java:588)
	at javafx.controls/javafx.scene.control.Control.computePrefHeight(Control.java:570)
	at javafx.graphics/javafx.scene.Parent.prefHeight(Parent.java:1039)
	at javafx.graphics/javafx.scene.layout.Region.prefHeight(Region.java:1559)
	at javafx.controls/javafx.scene.control.skin.VirtualFlow.resizeCell(VirtualFlow.java:1923)
	at javafx.controls/javafx.scene.control.skin.VirtualFlow.addLeadingCells(VirtualFlow.java:2030)
	at javafx.controls/javafx.scene.control.skin.VirtualFlow.layoutChildren(VirtualFlow.java:1250)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1206)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1213)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1213)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1213)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1213)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1213)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1213)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1213)
	at javafx.graphics/javafx.scene.Scene.doLayoutPass(Scene.java:576)
	at javafx.graphics/javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2482)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:412)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:389)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:411)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:438)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:563)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:543)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:536)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:342)
	at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
	at java.base/java.lang.Thread.run(Thread.java:835)

and then subsequent NullPointerExceptions:

java.lang.NullPointerException
	at javafx.controls/javafx.scene.control.skin.CellSkinBase$StyleableProperties$1.isSettable(CellSkinBase.java:166)
	at javafx.controls/javafx.scene.control.skin.CellSkinBase$StyleableProperties$1.isSettable(CellSkinBase.java:161)
	at javafx.graphics/javafx.scene.CssStyleHelper.transitionToState(CssStyleHelper.java:666)
	at javafx.graphics/javafx.scene.Node.doProcessCSS(Node.java:9658)
	at javafx.graphics/javafx.scene.Node$1.doProcessCSS(Node.java:471)
	at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSSImpl(NodeHelper.java:192)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.superProcessCSSImpl(ParentHelper.java:93)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.superProcessCSS(ParentHelper.java:63)
	at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1368)
	at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.superProcessCSSImpl(ControlHelper.java:63)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.superProcessCSS(ControlHelper.java:55)
	at javafx.controls/javafx.scene.control.Control.doProcessCSS(Control.java:886)
	at javafx.controls/javafx.scene.control.Control$1.doProcessCSS(Control.java:89)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.processCSSImpl(ControlHelper.java:67)
	at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145)
	at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1399)
	at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.superProcessCSSImpl(ControlHelper.java:63)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.superProcessCSS(ControlHelper.java:55)
	at javafx.controls/javafx.scene.control.Control.doProcessCSS(Control.java:886)
	at javafx.controls/javafx.scene.control.Control$1.doProcessCSS(Control.java:89)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.processCSSImpl(ControlHelper.java:67)
	at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145)
	at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1399)
	at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98)
	at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145)
	at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1399)
	at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98)
	at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145)
	at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1399)
	at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98)
	at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145)
	at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1399)
	at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125)
	at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.superProcessCSSImpl(ControlHelper.java:63)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.superProcessCSS(ControlHelper.java:55)
	at javafx.controls/javafx.scene.control.Control.doProcessCSS(Control.java:886)
	at javafx.controls/javafx.scene.control.Control$1.doProcessCSS(Control.java:89)
	at javafx.controls/com.sun.javafx.scene.control.ControlHelper.processCSSImpl(ControlHelper.java:67)
	at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145)
	at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9540)
	at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9533)
	at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9533)
	at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9533)
	at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9533)
	at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9533)
	at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9533)
	at javafx.graphics/javafx.scene.Scene.doCSSPass(Scene.java:569)
	at javafx.graphics/javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2477)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:412)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:389)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:411)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:438)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:563)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:543)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:536)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:342)
	at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
	at java.base/java.lang.Thread.run(Thread.java:835)

After the first exception is thrown, the application's stage partially stops refreshing and its layout becomes a bit messed.

I have seen reports of similar bug subbmited several times to Java Bug System, but everytime they were closed without any resolution. Please look here for the reference: JDK-8183105.

This is very difficult to provide MRC for this issue since the problem occures quite rarely (a couple of times a day), quite randomely and it is not related to user actions in the GUI.