interactive annotation about <TextArea> with perRegion="true"

Hi~ Thanks for this wonderful project.
Currently, I try to perform interactive annotation for automatically polishing the description of each bbox region via a LLM, which looks like
```

```
However, when I submit the text, I am unable to transmit the annotated description to the predict function in the label-studio-ml backend.
It seems `perRegion="true"` disables this process. How could I address this issue? Thanks.