At for example meta.discourse.org/my/summary, the “Most Liked By” column containers the correct numbers of likes and the correct users, but does not match them up correctly.
This is a little easier to see when you’re the admin for the site and can check against a data explorer query, though. I can’t easily verify it’s happened on meta, have seen the issue most clearly on my site.
Nothing special required, just visit a user summary page and check the numbers against some other source. For example using the data explorer plugin, or using the user directory in some circumstances (one of the “most liked by” for my page on my site, for example, is shown giving me more likes than he has given total on the user directory).