Some puppetclass smart parameters are duplicated

Problem:
In smart “Coufigure → Smart Class Parameters” for some puppetclasses some of their parameters are duplicated.
The similar behavior described in this issue: Smart Class Parameter issue after upgrading to 2.3.1 - Support - TheForeman

But in my case parameters are identical except for their id in database.

Ready to provide further information for debug. But I have no idea what exactly can help here.
Any help is appreciated.

Foreman and Proxy versions:
Foreman: 3.2.1
Puppet: 7
Puppet smart proxy: 3.2.1