The Beacons Tooltip identifies the wrong row, not necessarily the row that the mouse is pointing at. I am unable to capture the mouse pointer easily.
However, note:
I am using a larger pointer than the default.
Beacon Font Size == 9.
VarAC software is version 10.4.3 and it is running on Windows 10.

Plus with the next version you will have some more contextual info!
Thank you for reporting.
This bug was alreaedy reported and fixed in the code for the upcoming version
73s