Windows standalone x64 built with "Development Build" and "Script Debugging" options crashes on Build Exit.
Heap corruption error can also be observed when a player is built with debug version of Unity

Steps for reproduction:
1) Compile debug build of Unity
2) Create an empty scene with a cube
3) Ensure that Enlighten is selected as backend and realtime GI is enabled (default settings are used)
4) Deploy the Windows standalone build
5) Open the player (everything works as expected)
6) Exit the player by closing it
7) Observe the Heap Corruption error as shown on the image below

Fixed in: 2018.1.0a6

Expected Result: The Build Exits normally
Actual Result: the Build Freezes/Crashes

Reproduced with: 2018.1.0a1, 2017.3.0b4, 2017.2.0f3, 2017.1.2f1
Did not reproduce on: 5.6.4f1 (Script Errors)

Note:
2017.3.0b4 needs "AutoConnect Profiler" and you need to Click on the Button and Clear the Development Console before step 4