It is actually an expected behavior. Test Studio tries to locate the elements in the DOM Tree. Even if the cells are not visible on your screen, Test Studio will be able to reach them through the DOM Tree.
I hope this answers your question. If not, please elaborate a bit more your scenario and the goals you have. Send us please the project or record a video how exactly you are recording and executing the test. Jing is a free and decent screen recorder.
Looking forward to hearing from you.