It looks like the/at least some hinting data is missing from the web font files included in the official download package – it's not showing up if I open a .woff/.woff2-file in Font Forge, and parts of certain letters are indeed rendering blurrier (e.g. the horizontal line of a capital A at e.g. 14 or 15px) than with a web font conversion I did myself based on the original OTF files.
It looks like the/at least some hinting data is missing from the web font files included in the official download package – it's not showing up if I open a .woff/.woff2-file in Font Forge, and parts of certain letters are indeed rendering blurrier (e.g. the horizontal line of a capital A at e.g. 14 or 15px) than with a web font conversion I did myself based on the original OTF files.