Hi there,
I have just the same problem on my Mac (Word 16.25, Endnote X9.1.1). When I am searching for an author I cannot see any entries in the upper field of the “find citation” box. As there are entries in the lower box it seems that the search results are simply not displayed in the upper box. When I close the box and re-open it the search results are displayed correctely.
Is the a solution for this problem?