Occasionally, I see a kernel crash with `GridGraph[{6,6,6}]`.  It is not easy to trigger. Sometimes it may require as many as 30 evaluations before it happens, and doing those evaluations in a `Do` loop doesn't trigger it. It is necessary to evaluate separate inputs manually. At other times, I cannot evaluate `GridGraph[{6,6,6}]` even once in a new session as it causes a crash every time.

Here's a screenshot (command line) of how it crashed after 20 evaluations (silent exit):

[![enter image description here][1]][1]

So far I could reproduce this with M11.3.0 on macOS 10.13.4. With M11.2.0 I could not.  I would like to know if others can see the crash too, or if it is related to some settings specific to my machine.

  [1]: https://i.stack.imgur.com/obw6b.png