Using expression editor matches clause is removed after the rule is saved

Customer wants to use matches clause on the list of values.  When they used expression editor to define a condition on the string. e.g:
MATCHES(“HYBRIDPARTYFRAUD.*”) 

After saving and then they reopened the rule they observed the MATCHES clause has been removed, and replaced with empty equals clause.

See attached screenshots:

 
1. First screenshot creates this as source:
 
```
package com.space.hello_world;

import java.lang.Number;
import java.lang.String;

rule "test"
dialect "mvel"
when
DcdRequest( $ruleInfo : brainiacRuleInfo != null )
(String( matches("HYBRIDTINYFRAUD.*")) from $ruleInfo)
then
end
```
 
2. after close and reopen I see this:
 
```
package com.space.hello_world;

import java.lang.Number;
import java.lang.String;

rule "test"
dialect "mvel"
when
DcdRequest( $ruleInfo : brainiacRuleInfo != null )
(String( ) from $ruleInfo)
then
end
```