Turning a 'dmx-radio-group' into a Conditional Region loses the Radio Group functionality

I have a Radio Group with is="dmx-radio-group".
The column Properties gives me the option to Make Conditional Region.
When I make the Radio Group into a Conditional Region the 'is=' changes from
is="dmx-radio-group"
to
is="dmx-if"
which then means that because it is no longer an is="dmx-radio-group" then the Group’s value cannot be selected in the data picker.

Am I doing something wrong?

I suppose what I have been doing is…
turning a ‘Radio Group Column’ into a ‘Conditional Region Column’ rather than
adding the functionality of a ‘Conditional Region’ to a ‘Radio Group’
which are two different things.

So what should I be doing?
Should I be putting the Radio Group inside a ‘Section’ that is set as a Conditional Region?
Problem is then that I don’t want any CSS attributes to upset the layout. I just want a non-attributed container.