I have a couple of number fields in my custom type. Whenever I set a value containing decimals, it is rounded off in the UI after I publish the document. The value still shows up with decimals on my site, so it seems to be a problem in the Prismic UI.
So if I set the value to 5.2 for example, and then publish, my site will show 5.2 but Prismic UI will show just 5. It can be quite confusing.
I'm using Chrome version 96.0.4664.45 on Windows, if that might be of any importance.