Popup closing even with validation errors in IE - works correctly in FF

Question

Hi,
Using JDeveloper 11.1.1.4.
We have a page where the user can upload files via a popup. After selecting the file to upload and submitting, the file type and size are validated against application parameters. If the validation fails, the inputFile component is set invalid and a ValidationException is thrown. In Firefox, the functionality is as expected: the popup stays open and the validation error message is displayed next to the inputFile component. In Internet Explorer, however, the popup closes without any error being displayed.
Popup:
<af:popup id="pt_fileUploadPopUp" contentDelivery="lazyUncached"
                        binding="#{FileUploadOperations.uploadFormPopup}">
<af:inputFile label="#{UC1315ResourceBundle['L1336']} "
                                  id="pt_i3f1"
                                  value="#{FileUploadOperations.uploadedFile}"
                                  requiredMessageDetail="#{UC1315ResourceBundle['REQ_MSG_FILE_UPLOAD']}"
                                  validator="#{FileUploadOperations.validateFile}"
                                  required="true"/>
<af:commandButton id="pt_CB_2001"
                                            text="#{UC1315ResourceBundle['BUTTON_2007']}"
                                            actionListener="#{FileUploadOperations.uploadFile}"
                                            partialSubmit="true"
                                            disabled="#{pageFlowScope.pApplicationMode == 'PREVIEW'}"/>
</af:popup>Validator method:
    public void validateFile(FacesContext facesContext,
                             UIComponent uIComponent, Object object) {
            try {
                // validation logic
            } catch (CustomFileUploadException exp) {
                inputFileComponent.resetValue();
                inputFileComponent.setValid(false);
                FacesMessage facesErrorMessage = new FacesMessage();
                facesErrorMessage.setSeverity(FacesMessage.SEVERITY_ERROR);
                facesErrorMessage.setDetail(exp.getMessage());
                facesErrorMessage.setSummary(exp.getMessage());
                throw new ValidatorException(facesErrorMessage);
    }Any ideas what might be the problem here?
Thanks,
Joonas

Answer 1

@Srinivas, I changed the component inside the popup to af:dialog (was af:panelWindow before) but this didn't solve the problem - the behavior is the same. Thanks for the suggestion though.
@Frank, seems this problem is implementation-specific. I created a simple test case and the validation error was displayed correctly in IE.