jsf input form value disapear on first submit - jsf

Question

I use JSF 2.2 and Primefaces 6.1. I have a problem with textarea value on first form submit. I use multiple subviews for one form. The problem is when type something into textarea, after first form submit this value disapear and not update data model. But when type again and fire submit, then this value is showing. The textarea is inside subTable in dataTable.
I tried use valueChangeListener together with ajax. This works, but when click to fast to submit, then value haven't be updated. I tried only ajax but result was the same. I tried valueChangeLister with onchange="submit()" but this not worked. tried solution Primefaces valueChangeListener or <p:ajax listener not firing for p:selectOneMenu but this not working
Textarea code
<h:form id="reuestForm">
<div class="form-group">
<p:dataTable id="edScopeTable" styleClass="form-group dataTable-space"
value="#{requestBean.employeeDealerTabController.getEdScopeCategories()}"
var="category">
<p:columnGroup type="header">
<p:row>
<p:column headerText="#{i18nMsg.ed_env_scopes_tbl_colScope_header}"/>
<p:column headerText="#{i18nMsg.ed_env_scopes_tbl_col_openIdConnect_header}"/>
<p:column headerText="#{i18nMsg.ed_env_scopes_tbl_col_reasonNeeded}"/>
</p:row>
</p:columnGroup>
<p:subTable
value="#{requestBean.employeeDealerTabController.getScopeReasonsByCategory(category)}"
var="edScope" rendered="#{requestBean.employeeDealerTabController.isCategoryInTable(category)}">
<p:column styleClass="#{requestBean.employeeDealerTabController.calculateDiff(edScope,'cell-right')} textAlign-center">
<p:inputTextarea id="reason"
value="#{edScope.reason}" rows="2"
autoResize="false"
data-disable-type="custom"
styleClass="form-control #{edScope.getDiffValue('reason')}"
rendered="#{edScope.edScopeConst.reasonNeeded}"
label="#{i18nMsg.edScope_request_selectionTable_scope_reasonNeeded} #{edScope.edScopeConst.name}"
disabled="#{requestBean.employeeDealerTabController.disableReasonField()}">
<f:attribute name="scope" value="#{edScope}"/>
<f:validateBean
binding="#{requestBean.validatorContainer.requiredBeanValidator}"/>
<p:message for="reason" display="tooltip"/>
</p:inputTextarea>
<h:outputText
rendered="#{not edScope.edScopeConst.reasonNeeded}"
value="#{i18nMsg.edScope_request_selectionTable_scope_noReasonNeeded}"/>
</p:column>
</p:subTable>
</p:dataTable>
</div>
<div class="text-right">
<p:commandButton value="#{(requestBean.request.version eq 1 and requestBean.request.stateDraft) or requestBean.isEdRequestToBePrinted() ? i18nMsg.general_mainButton_send_and_print : i18nMsg.general_mainButton_send}"
id="send"
update="requestForm"
actionListener="#{requestBean.prepareDialog()}"
oncomplete="args.validationFailed ? PF('validationFailedMessageDialog').show() : PF('readyToSendDialog').show(); jQuery(document).scrollTop(0)"
title="#{requestBean.sendButtonDisabled ? i18nMsg.request_sendButtonTooltip : ''}"
styleClass="ui-priority-primary" icon="ui-icon-mail-closed"
disabled="#{requestBean.sendButtonDisabled}" data-disable-type="custom" />
</div>
</h:form>
RequestBean
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
#ManagedBean
#ViewScoped
public class RequestBean extends PageBeanBase implements Serializable {
private EmployeeDealerTabController employeeDealerTabController;
#PostConstruct
public void initialize() {
employeeDealerTabController = new EmployeeDealerTabController();
}
public EmployeeDealerTabController getEmployeeDealerTabController() {
return employeeDealerTabController;
}
public void prepareDialog() {
// preparation before send and show dialog with confirmation send form
}
// rest of method
}
EmployerDealerTabController
public List<EdScopeREason> getScopeReasonsByCategory(int category) {
if(category == 1) {
return scopesOidcList;
} else {
return scopesIdentityList;
}
}
EdScopeReason
#Entity
#Table(name = "ED_SCOPE_REASON")
public class EdScopeReason extends InlineDiffBase<EdScopeReason> implements EdScopeConstBearer, Serializable, Comparable<EdScopeReason> {
private String reason;
#Basic
#Column(name = "REASON")
#NotBlank(groups = RequiredValidationGroup.class, message = "{iamat.validation.general.edScopeReason.notempty}")
public String getReason() {
return reason;
}
public void setReason(String reason) {
this.reason = reason;
}
}
I have setter and getter method. When I debug this value is pass to validator but not set to component. I'm little confused why this value is not set on the first time
EDIT
I add jsf ajax to textarea input and set 5s delay on commandButton. This is some kind of workaround, but still look for better solution. When I use primefaces ajax I don't need delay, but for every primefaces ajax I display loader.gif.
<p:inputTextarea id="reason"
...{requestBean.employeeDealerTabController.disableReasonField()}">
<f:attribute name="scope" value="#{edScope}"/>
<f:validateBean
binding="#{requestBean.validatorContainer.requiredBeanValidator}"/>
<p:message for="reason" display="tooltip"/>
<f:ajax />
</p:inputTextarea>
....
<p:commandButton value="#{(requestBean.request.version eq 1 and requestBean.request.stateDraft) or requestBean.isEdRequestToBePrinted() ? i18nMsg.general_mainButton_send_and_print : i18nMsg.general_mainButton_send}"
id="send"
update="requestForm"
actionListener="#{requestBean.prepareDialog()}"
oncomplete="args.validationFailed ? PF('validationFailedMessageDialog').show() : PF('readyToSendDialog').show(); jQuery(document).scrollTop(0)"
title="#{requestBean.sendButtonDisabled ? i18nMsg.request_sendButtonTooltip : ''}"
styleClass="ui-priority-primary" icon="ui-icon-mail-closed"
disabled="#{requestBean.sendButtonDisabled}" data-disable-type="custom" delay="5000" />