Testing the new 3.8RC1 with k2 2.8 when importing Joomla Content that is installed and trying to edit it the error
0 Error decoding JSON data: Syntax error
is given with both php 5. and 7.
When a new k2 item is created and then edited the error does not occour.
The imported items seem to show ok in the front end
Havent had time to look at the records to determine the difference in the table yet.