As the Chrome auto-update is enabled by default, once it is updated the core console maybe will be displayed like this:
This issue happen with the new Chrome version 58.0.3029.81, the previous version which is 57.0.2987.133 works perfectly and is caused because the explorer cache still on the old version.
There are 2 solutions for this issue:
Solution #1: Clear Chrome cache:
Solution #2: Roll back to 57.0.2987.133 and disable the auto-update: