Hi,
I am also having this issue on a clients site.
I've got a group with 3 elements, dropdown(image/video), image, number). (This is a slider that can show images or video from vimeo by id). It's been running for over 6 years without issue, we have not made changes to the code or configuration.
When the client edits a post with the given group the group details do not display.
It looks like the deserialization is failing.
Please help us find a fix, or tell me a previous version of metabox that I can use without the issue.
Video: https://screenrec.com/share/MEqvY6zUB9
Serialized data in DB, (carriage returns added for readability)
a:3:{
i:0;a:2:{
s:11:"slider_type";s:5:"image";s:12:"slider_image";s:4:"9566";
}i:1;
a:2:{
s:11:"slider_type";s:5:"image";s:12:"slider_image";s:4:"9559";
}i:2;
a:2:{
s:11:"slider_type";s:5:"image";s:12:"slider_image";s:4:"9589";
}
}
--Field JSON
https://pastebin.com/NuFLNf48
