It may be possible. If you are a client, please open a support ticket and refer them to this post. 👍️
We will need to know the steps you used to create a group in phpBB. We also require a user account in your forum with the necessary permissions to reproduce the issue.
We will have to redo the steps with ModSecurity enabled, check the logs, and analyze the file responsible for handling the creating of groups. In case it is possible, we will make the necessary changes to make it compatible.