When I try to lay out my PCB I sometimes get these diagonal lines going through a component.I click on the component but can't find any details or anything wrong. What does this mean and is it anything that needs my attention?

When I try to lay out my PCB I sometimes get these diagonal lines going through a component.I click on the component but can't find any details or anything wrong. What does this mean and is it anything that needs my attention?

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