Citation preview bug
Split vertically the reader window of PDF into two part.
In the left part, the citation window will appear if we move the mouse toward citation number.
However, in the right part, the citation window doesn't appear when the mouse move to the citation number
In the left part, the citation window will appear if we move the mouse toward citation number.
However, in the right part, the citation window doesn't appear when the mouse move to the citation number
(Future versions will provide other ways of doing this, though.)