Hello, when I launch a world with the snapshot 16w20a, there is an error :

1. A fatal error has been detected by the Java Runtime Environment:
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2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ff98d5a172c, pid=7856, tid=5352
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3. JRE version: Java(TM) SE Runtime Environment (8.0_91-b14) (build 1.8.0_91-b14)
4. Java VM: Java HotSpot(TM) 64-Bit Server VM (25.91-b14 mixed mode windows-amd64 compressed oops)
5. Problematic frame:
6. C [ig8icd64.dll+0x60172c]
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7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
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8. An error report file with more information is saved as:
9. C:\Users\Dorian\AppData\Roaming\.minecraft\hs_err_pid7856.log
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10. If you would like to submit a bug report, please visit:
11. http://bugreport.java.com/bugreport/crash.jsp
12. The crash happened outside the Java Virtual Machine in native code.
13. See problematic frame for where to report the bug.
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    AL lib: (EE) alc_cleanup: 1 device not closed