I've had 2 crashes with the new preview build. Can't upload the report here so here is what it says.
Current thread (0x15b26400): JavaThread "JavaFX Application Thread" [_thread_in_native, id=8068, stack(0x169e0000,0x16a30000)]
siginfo: ExceptionCode=0xc0000005, writing address 0xbbadbeef
Registers:
EAX=0x00000000, EBX=0x73ef9048, ECX=0x00000001, EDX=0x00000000
ESP=0x16a2c5ac, EBP=0x16a2c634, ESI=0x73ec0048, EDI=0x752a7034
EIP=0x5f7fc743, EFLAGS=0x00210206
Top of Stack: (sp=0x16a2c5ac)
0x16a2c5ac: 5f7fc72c 6e7be3ca 16a2dee8 77b067b0
0x16a2c5bc: 6e7b1a12 fffffffe 16a2c5f8 77ad5cc3
0x16a2c5cc: c0000017 752a7034 00047b95 73ef9048
0x16a2c5dc: 00047ba0 00000000 77ab92e9 012e4b88
0x16a2c5ec: 00000003 00000000 00047b95 16a2c604
0x16a2c5fc: 0f61a4fa 00000007 16a2c62c 6ac4f747
0x16a2c60c: 00000008 00000000 00047b95 6ac51782
0x16a2c61c: 6ac9dace 752a7034 73ef9048 73ec0048
Instructions: (pc=0x5f7fc743)
0x5f7fc723: ff ff 51 6a 21 6a 00 ff d0 0f b7 c0 eb 02 33 c0
0x5f7fc733: 83 c0 fe 50 8d 45 80 50 e8 70 04 00 00 83 c4 08
0x5f7fc743: c7 05 ef be ad bb 00 00 00 00 33 c0 ff d0 8b 4d
0x5f7fc753: fc 33 cd e8 c3 5a 0c 00 8b e5 5d c3 cc 55 8b ec
Register to memory mapping:
EAX=0x00000000 is an unknown value
EBX=0x73ef9048 is an unknown value
ECX=0x00000001 is an unknown value
EDX=0x00000000 is an unknown value
ESP=0x16a2c5ac is pointing into the stack for thread: 0x15b26400
EBP=0x16a2c634 is pointing into the stack for thread: 0x15b26400
ESI=0x73ec0048 is an unknown value
EDI=0x752a7034 is an unknown value
Stack: [0x169e0000,0x16a30000], sp=0x16a2c5ac, free space=305k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [jfxwebkit.dll+0xb9c743]
C 0x16a2c658
C [jfxwebkit.dll+0x6c4852]
C [jfxwebkit.dll+0x43e5df]
C [jfxwebkit.dll+0x38d1db]
C [jfxwebkit.dll+0x6be1da]
Sorry about how long it is.