Righteous Glory Extra 10% CDR Bug

I was playing thresh a little bit today and noticed a bug with the build of Righteous Glory. [**Link to Imgur Playlist With Descriptions of The Bug**](https://imgur.com/a/Fo7hUfN) It may just be a visual bug, as I saw that **it would return to 25% CDR from 35% CDR** at a seemingly random time within a minute of purchasing the item.
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