Why is isDisplayed not working in Selenium?

Question

selenium

Good afternoon.
It is necessary to check if the element is visible on the page, why does the method return false when the element is on the page for sure?
driver.findElement(By.id(“#remove-button”)).isDisplayed();

Answer 1

an element can be on the page and visible to the eye, but not visible and programmatically inaccessible. For example, it is blocked by another currently invisible element.