In the Public Sans font, the lowercase "j" has a taller dot than the lowercase "i".
I can think of no good reason for this. It looks sloppy and seems like a design or rendering error.
Using Chrome 73 on Mac OS 10.10, visit the Public Sans site and select one of the weights at the top of the page to view samples. I can see that the "j" has a noticeably larger dot than the "i" in weights 100, 200, 300, 400, 500, 600, 700, and 800. I can't tell if it has a larger dot in 900.








Or, download Public Sans Regular as a TTF and see that the "j" has a larger dot than the "i" when rendered by Font Book on Mac OS 10.10:

Yup — that's a mistake. I'll correct this.
Thank you!
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Yup — that's a mistake. I'll correct this.