Object unreachable after componentization

Whenever I create a component out of anything, the bottommost layer always becomes unreachable. It is clearly visible and still responds to resizing, but simply cannot be interacted with otherwise: it cannot be selected, deleted, copied; it’s hidden from the list on the left sidebar. I have searched through the forums and online but cannot find any mention of this issue. Am I doing something wrong? Please help me. This is driving me insane. Thank you.