Would be great if we could use the tab key to navigate through input fields.

you can already do that (they must be in the same window/parent)

Odd does not seem to work for me :(
example, model editor transform window i can only navigate by double clicking the fields

I'll check why it doesn't work in that case. but you can see that it works in other places, for example data browser mode, connect to server button

all good, certainly not super important it just occurred to me when i had to edit the scale of a large bunch of objects.

this will be fixed for next SDK