Minimal reproduction example for JDK-8217953 NPE in TableCellSkin

[Peter, Benjamin]

Dear FX devs,

please accept my minimal reproduction example for JDK-8217953
"NullPointerException when TableCellSkin gets disposed twice"

In the report it says there was no luck reproducing it - I hope this could now be beneficial for a solution to this problem.

I could repeatedly trigger the problem after 100 of my update cycles - which interestingly corresponds to the following constant which can be found along the stacktrace. 
javafx.scene.control.skin.TableRowSkinBase.DEFAULT_FULL_REFRESH_COUNTER = 100
Surely - could be coincidence - but also a hot lead.


I can also confirm it is still reproducable in jfx 11 and 13.

It is available as public domain gist on github:

https://gist.github.com/dedeibel/d02fb51c59942bebcb6e418f23d310fb



Thank you for your work and cooperation,

with kind regards,


Benjamin Peter