I upgraded the Mysql instance from 5.5 to 5.7. After that I get some issue during the saving of data in report table.
It seems that the field sizes of some fields (i.e. textarea and datetime) becomes small. I tried to delete the column table and recreate it but nothing. Also I don't have any chance to change the size of fields from the report table creation mask the only way is to manually alter the database and, by the way, I don't see the increased size in the report table creation mask.
Any idea why this happen?