This workflow is using reflection to customize the look of the editor and thus is not supported by Unity.
After a short investigation, we can suggest to use styling as a workaround. The problem seems to be that the input field is clipped out, so changing `overflow` to `visible` would solve the problem, but could create others. Adding this style brings back the input fields:
```
.unity-base-text-field__input--single-line {
overflow: visible;
}
```