FULL PRODUCT VERSION :
java version "1.8.0_162"
Java(TM) SE Runtime Environment (build 1.8.0_162-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
MacOS 10.12.6

A DESCRIPTION OF THE PROBLEM :
When typing in the JavaFX HTMLEditor the whole process suddenly crashes from time to time.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Just use a HTMLEditor and type, select, cut and copy text. I cannot reproduce it exactly, it happens from time to time when using the HTMLEditor. Maybe the crash details below will help.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
It shouldn't crash.
ACTUAL -
It crashes.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
2018-03-28 00:02:18.215 java[36139:9564341] Apple AWT Internal Exception: *** -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array
2018-03-28 00:02:18.216 java[36139:9564341] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array'
*** First throw call stack:
(
0 CoreFoundation 0x00007fffabc322cb __exceptionPreprocess + 171
1 libobjc.A.dylib 0x00007fffc0a4948d objc_exception_throw + 48
2 CoreFoundation 0x00007fffabb4badc -[__NSArrayM objectAtIndex:] + 204
3 libglass.dylib 0x0000000128d3c995 Java_com_sun_glass_ui_mac_MacPasteboard__1getItemStringForUTF + 437
4 ??? 0x0000000110b27e82 0x0 + 4575100546
5 ??? 0x000000010e3771b0 0x0 + 4533481904
)
libc++abi.dylib: terminating with uncaught exception of type NSException

REPRODUCIBILITY :
This bug can be reproduced occasionally.