Found a bug, But not sure if it is a bug!

I was using the comments, annotations, and measurements for detailed feedback. It was very useful, but then when I found something!

1. I had 2 frames; both Frame 1 & Frame 2 had the same design. And that’s a data table!
2. I marked the height of the cell and header using the measurement tool in both frames.
3. Then I deleted one measurement in Frame 2 by clicking on the measurement number.
4. Suddenly Frame 1 got deleted along with the selected measurement number.
5. I did Undo and tried the same thing again, but the same action (point 4) occurred.
6. Then you know what? Frame 1 was selected too, along with the selected measurement number.
7. But I didn’t do multi-select though??
8. Problem: No matter what frame is selected, if you don’t notice the selection and click on any measurements to delete, it acts like there is a multi-select, and it deletes both the selected frame and measurement.
9. Question: Is this a bug?