CSS and UI properties in XD dev spec

So i just shared a spec with the dev team and one thing i noticed (or maybe two things) are:

- fonts that have been added to the library and have names still show as:

font: var(--unnamed-font-style-normal) normal var(--unnamed-font-weight-normal) var(--unnamed-font-size-12)/var(--unnamed-line-spacing-16) var(--unnamed-font-family-lato); when you open the spec 

- letter spacing set to 24 in the desing file shows as 0.29px in the dev spec (which is wrong and missleading)

can someone advice if i am doing something wrong or XD had a bug or two?