g:render with body and g:set bug

[demon101]

Task List

• [X] Full description of the issue provided (see below)
• [X] Steps to reproduce provided
• [X] Example that reproduces the problem uploaded to Github

Steps to Reproduce

index.gsp:

<g:render template="someTemplate">
    <g:set var="someVariable" value="Yes!"/>
    value: ${someVariable}
</g:render>

someTemplate.gsp

<%@ page contentType="text/html;charset=UTF-8" %>
Bla bla!
${raw(body())}
End

Expected Behaviour

render

Bla bla! value: Yes End

Actual Behaviour

Bla bla! value: End

Variable value is missing, null

Can be fixed by moving set out of render:

<g:set var="someVariable" value="Yes!"/>
<g:render template="someTemplate">
    value: ${someVariable}
</g:render>

Environment Information

• Grails Version: 3.1.15, 3.2.8

Example Application

https://github.com/demon101/grails-trigers/tree/master/grails-app/views/test