Field name 0(Zero) doesn’t save data and Field Label 0 isn’t being displayed. I looked closely and found out Field name ‘0’ doesn’t have data-name attribute.
https://i.imgur.com/QL3fTme.png
Field name 0 in Edit Field Group page:
https://i.imgur.com/vvl4xp3.png
Field name 0 after saving in the selected location or taxonomy:
https://i.imgur.com/uMVJjhE.png
What can be the problem here? I have been using ACF Version 5.9.0. Thank you.
I don’t know the exact cause of the issue, but it’s never a good idea to have field names start with numbers. When labels need to be numbers I will generally alter then field name to something more significant like size_00
etc.