Issues with {{' in ENV and variable names - version 6.8.0

We're seeing some new weirdness when retrieving variable names

E.g.

image

When we call the following code, it inserts the 's in the first token, not the second.

Similarly, when we retrieve the following value, it includes a

"url": "{{$_ENV.AWS_API_PATH+'/dm/patient?obpid='+$_PARAM.patient_id}}",

and return this error:

Lexer Error: Unexpected token "=" at column 38 in expression 
{{'$_ENV.AWS_API_PATH+'/dm/patient?obpid='+$_PARAM.patient_id+'&dm_gateway='+dm_gateway_url}}

It appears to be explicitly adding a single quote

Any clues anyone ?

Thanks