Can not create/update collection with type JSON

return‘http://localhost:1337/products’, {
assets: {
here: ‘assets, collection type is JSON, but this message is not saved to the database.’,

I found similar bug when I upgraded to the latest version of Strapi which is 3.4.0. I cannot save data into a JSON field. Also I cannot see the saved data into Strapi when I open the Collection Type. Also I cannot copy and paste JSON data from outside source into the field anymore.

ive tested it, and found the issue is related to admin UI form, its not showing even thou database contains the json.
filed the bug