Create Incident, case, etc. from Connect Action is not setting the values on the form correctly. For example it is supposed to set the "caller" and "short_description" values, but you are seeing blank or incorrect values.
There is a 'sys_template' record named exactly the same as the table name. This confuses the system and applies the values from the 'sys_template' record.
Rename or remove the sys_template record and as a best practice do not name templates the same name as tables in the instance.