rowsPerPageTemplate Dropdown dissapears after selection change and clicking away - jsf

Question

I have Datatables(PrimeFaces 8.0.1) on multiple pages, only one of them had rows and rowsPerPageTemplate attributes, now i need to modify all other DataTables in the same way. All DataTables (dataTableA,dataTableB,..) are almost identical and have own #SessionScoped Beans(ControllerA, ControllerB,..). At first all DataTables seem to be OK, but if i change the rows per page selection of a dataTableX and click away to another page/dataTable and then i turn back to dataTableX, rows per page dropdown isn't there anymore (for the rest of the session). Can anyone help please? Thank you.
listViewA.xhtml
<h:form id="listAUserForm">
<p:dataTable id="dataTableA"
value="#{controllerA.listA}"
reflow="true"
paginator="true"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} #{msg.rows_per_page}: {RowsPerPageDropdown}"
currentPageReportTemplate="#{prop.current_page_report_template}"
paginatorAlwaysVisible="false"
var="entryA"
rows="#{controllerA.rowsPerPage}"
rowsPerPageTemplate="10,20,30,{ShowAll|'All'}"
rowKey="#{entryA}"
selection="#{controllerA.entriesSelected}">
<p:ajax event="rowSelectCheckbox" listener="#{controllerA.onRowSelect}" update=":toolbarA" />
<p:ajax event="rowUnselectCheckbox" listener="#{controllerA.onRowUnselect}" update=":toolbarA" />
<p:ajax event="toggleSelect" process="#this" partialSubmit="true" update=":toolbarA"/>
<p:column selectionMode="multiple" style="width:16px;text-align:center"/>
....
....
</h:form>
ControllerA.java
#ManagedBean(name = "ControllerA")
#SessionScoped
public class ControllerA extends BaseController
{
private int rowsPerPage = 10;
private List<EntryA> entries= null;
public int getRowsPerPage()
{
return rowsPerPage;
}
public void setRowsPerPage(int rowsPerPage)
{
this.rowsPerPage = rowsPerPage;
}
public List<EntryA> getListA()
{
if (entries== null)
{
entries= new ArrayList<>();
List<EntryA> tmpListA;
try
{
tmpListA= getSecurityServiceLocator().getBeanA().getAllEntries();
}
catch (SecurityException ex)
{
LOGGER.error("Error retrieving listA", ex);
return Collections.emptyList();
}
if (!isFilterExist())
{
entries.addAll(tmpListA);
return entries;
}
for (EntryA tmpEntryA : tmpListA)
{
if (tmpEntryA.filterMatch(filterValue.toLowerCase()))
{
entries.add(tmpEntryA);
}
}
}
return entries;
}
...