Grails 6.2.0 - Cast Exception if Action takes Command about grails-core HOT 6 OPEN

This behavior wasn't present in our project for Grails 5.x. We first noticed it when we updated to Grails 6.x.

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Here's a screenshot of the byte code generated by Grails for the list action that gets created to handle command object creation:

I've circled in red what's causing the cast exception.

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That is interesting! Could you also post the generated code when the variable is renamed?

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If I rename the variable in the edit action, here's the generated code of the list action:

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FYI: I ran into this too.

I found that if I use the method parameter name 'cmd' for the command object, then it fails:

def save(AssessmentCommand cmd) {

produces the org.codehaus.groovy.runtime.typehandling.GroovyCastException when I call save().

But when changing the parameter named to 'acmd', everything works as expected:

def save(AssessmentCommand acmd) {

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I've learned a bit more... it is not JUST the name. I have another case where the name of the parameter is 'cmd' and it works just fine.

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