When we use getText method in a ModelDriven's bean. We got NullPointerException in ActionSupport. We found the variable "container" is null when the bean is got from ModelDriven.getModel()
Following is the exception stack:
Note: we are upgrading the project from 22.214.171.124 to 2.5.5. In version 126.96.36.199 doesn't have this issue.