Sometimes when I close my JavaFX application I get these errors on my console:
[0x7FEF231B2F8] ANOMALY: meaningless REX prefix used
[0x7FEF2320B64] ANOMALY:
It seems that this anomaly is caused by recent graphics card replacement. I don't know exactly if it is caused by the drivers or the card itself.
Didn't think of that before, but anomalies started right after graphics card upgrade. With old card I can't reproduce these anomalies anymore.
I hope this answer is somewhat helpful to others.