Meta Box will not save a Custom Table Group field when using a POST API call to posts/post_ID
.
The payload will look correct on the output response, but if you GET the same post immediately after, the Group field is unchanged.
For example, I have a Group called Highlights Group with fields called Highlights within. This Custom Field is stored in a Custom Table.
I've previously been updating it successfully like this:
{
"meta_box": {
"HighlightsGroup": [
{
"highlight": "This is a test"
}
]
}
}
I have tested this up to the current version 2.0.2. The most recent version where this ability still works is 1.30.5 and I remain using that version due to this issue.