Requested for field missing for ceratin SCTASK records even when the field is present in the form layout for the form
This issue was caused because of a new client script being introduced on the sc_task table. This script is called 'Hide Request item if request is not empty'.
This script is installed with the Procurement plugin activation.
Since the script is added with the plugin installation, you may choose to modify it or deactivate it if the functionality provided by this script is not required.