Hi,
this problem is not new, I have reported it before on Windows. Sometimes
you need to scroll up or down by one (or two?) lines to see the
highlighted match.
But I've recently also observed it on Linux Mint (with a self-compiled
git version from some weeks ago I think), so I thought I'd raise it
again. It is still a bit hard to pinpoint when exactly it happens, though.
cheers
sven