Cart Price Rules Not Saving after 'Apply the rule only to cart items

  1. Magento 2.1.0
  2. Production Site

Saving a New Cart Rules works OK but when I complete the next steps:
Apply the rule only to cart items matching the following conditions
1. If ALL of these conditions are TRUE:
2. Select any of the options in the dropdown
Result:
Spinning Wheel Rotates and the screen returns to the dashboard without saving the condition

If I start a new rule from scratch and include the condiiton - the whole rule doesnt save.

The expected result should be that the new condition is applied.

 

I cannot see anythingin the logs to detect an error.

Please help.