It should show zero instead of not showing any value. This is causing confusion for our team because some values are set as zero and some are not, but we cant tell beforehand because of this issue.
Thanks for this bug report, and welcome to the Prismic community
I recreated it on my side as well. I've submitted this to the product team with your information. I'll let you know when I hear back.
Do you know if there where any advances regarding this issue?
Unfortunately there has been no movement on this. When this changes the team will update you here.