Numbers over a thousand without a dot

So, uhm, I have noticed that in the outliner, numbers over a thousand are not displayed with a separator dot. However, those over 10.000 are?
This is a picture of the total word counts of my different files in the outliner.
Captura de pantalla 2023-06-21 114158
As you can see, numbers over 10.000 and over 100.000 have the separator dot, but those between 1.000 and 9.999 don’t.
This happened when I upgraded to 3.1.5. Before, it showed all the dots.