2 Hatchings are showing different but they have same scale.

There should be a section that says Is Annotation: True.

If it is not there, right click to make it appear.

How do I check if annotation scale is active?

Perhaps one has Annotation Scale active and the other has not.

It would be helpful if you could provide details of the software and version you're currently using.

MicroStation Forum best practices

It may also be helpful to provide an example design file to understand what might be happening with these placement of hatching.