Mezo Istvan does a good job of covering the problem and a solution to it in a blog post on Medium.
If you tap on something that has a :hover state but you don't leave the page then, on a mobile device, there is a chance that :hover state 'sticks.' You'll see this with stuff like jump-links used as tabs or buttons that trigger on-page functionality.
The post Solving Sticky Hover States with @media...
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