Symptoms

Header text not displaying in list type view for particular column in runtime, but visible in design mode and all visibility properties are in order.
 

Diagnoses

This can be caused by the presence in the View definition of andltBREAKandgt, for the header row definition, which is not supported correctly in K2 SmartForms 1.0.7. This is unclear how this break can appear in the header row definition but if it appears there header text is not visible in runtime.
 

Resolution

This is known issue which is likely to be fixed in post 4.6.9 release. In case you facing this issue and re-creation of column is not an option you have to edit value of Canvas XML column in appropriate row of K2.Form.View_Design table. Please contact K2 support for assistance with this procedure.