Cannot save a rule or action in my event-rule-action

Document ID : KB000118680
Last Modified Date : 30/10/2018
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I'm trying to edit a rule or action in one of my event-rule-actions but when I click the "OK" button nothing happens.
First, it's important to make sure this rule is not flagged as a "built-in" rule. These can only be copied and not edited.
However, assuming that this is not a built-in rule, we have found this happens if there is a quote in the name of the rule.
For now, remove any special character from the name of the rule. Development is reviewing this for a fix.