I have retested this here with the latest version and I cannot see a problem.
Test code on a default AdvOfficeRadioGroup with 4 items
Hm, maybe that's because I'm calling it from FormCreate.
Please provide sufficient details/sample source project to allow us to reproduce this with the latest version of the components.
Just paste the code in FormCreate
But I can solve this by inserting the code into the FormShow section
We fixed this. The next update will address this.