I found strange behaviour of displaying the reputation in SO. Surprisingly, I haven't found any topic in Meta regarding this.
Here is an example. In the answer repo looks like 18.8k:
When I hover, in the popup we see 18.7k:
The exact repo level was 18,796 and it haven't changed for all the test period. Moreover, several times I have updated the page and the same difference remained.
Bug? or I didn't get something?