After upgrade to NG, Groovy HTTP parameters are not dereferenced

After upgrade to NG, Groovy HTTP parameters are not dereferenced - this is working fine for co-workers and was working fine in SoapUI 5.x on my same system.

In the request, name value section, I have parameters like: 

Name | Value

abc | ${=context.getProperty('abc')}

and Post-QueryString checked.

Parameter abc isn't subsituted with the abc property from context.

In the raw request, I see: 

abc=%24%7B%3Dcontext.getProperty%28%27abc%27%29%7D&... (omitting rest of the query string)

Using Ready!API v1.4.1 on Linux