If I select some text across 2 pages (from top to bottom), the highlight colors popup stays stuck to the top page:
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https://s3.amazonaws.com/zotero.org/images/forums/u265723/5soo34klcuqyzz1kr560.png
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A small scrolling fixes the problem:
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https://s3.amazonaws.com/zotero.org/images/forums/u265723/trdql5fihm2t5t3u7cuz.png
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If you scroll during the text selection, moving the top page out of view, you cannot see the popup window anymore:
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https://s3.amazonaws.com/zotero.org/images/forums/u265723/9hkhdkuh15g318hcu8gz.png
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