See attached.
Often when deleting a text element, there is no confirmation popup, and instead the element immediately vanishes, leaving behind a weird shaded area that cannot be selected in structural mode. The only way to resolve that is to go back to regular visual editor mode and find the element (which was never actually deleted) and remove it that way. In the photo, a text element right below the Accordion was removed in 3 straight rows . Only the middle one actually reacted as it’s supposed to.