Still a problem with ice:selectInputDate and ice:selectInputText. Please see new sample app (iceMock4) available at:-
smb://iceads1.icesoft.domain/Public/Users/mircea/iceMock4.war

landing page will show the components on the left side (by buttons). Note how the components work outside panelStack first. The ice:selectInputDate now has a time part of component (using the f:converter). This same ice:selectInputDate does not work within the panelStack. You do not need to change the page to medium or large to see these problems.

for the ice:selectInputText, you can use it outside the panelStack (on left side) and it will work. Try it within the panelStack. COMBOBOX_AUTOCOMPLETE <p>subQuestion text2</p>.....
and note that when you type anything in the combobox, it automatically gets submitted, rather than producing a list to select a value from.

Outside the panelStack the response looks like this
<partial-response><changes><update id="javax.faces.ViewState"><Unable to render embedded object: File (6462768739125065871]]></update><eval><) not found.[CDATA[Ice.Scriptaculous.Autocompleter.Finder.find('j_idt12:sitCBAC').updateNOW('<div><div>Val 2</div><div>Val 5</div><div>Val 7</div></div>');//-1506241518]]></eval><eval><![CDATA[var iceFormIdList=['j_idt7', 'j_idt12', 'pnlsFields:0:qstfrm', 'pnlsFields:1:qstfrm', 'pnlsFields:2:qstfrm', 'pnlsFields:3:qstfrm', 'pnlsFields:4:qstfrm', 'pnlsFields:5:qstfrm', 'pnlsFields:6:qstfrm', 'pnlsFields:7:qstfrm', 'pnlsFields:8:qstfrm', 'pnlsFields:9:qstfrm', 'v8lv3qo2-retrieve-update', 'v8lv3qo2-single-submit']; ice.fixViewStates(iceFormIdList,'2840535131029874048:6462768739125065871');]]></eval><extension aceCallbackParam="validationFailed">

</extension></changes></partial-response>

Inside the panel stack
<partial-response><changes><update id="javax.faces.ViewState"><Unable to render embedded object: File (6462768739125065871]]></update><eval><) not found.[CDATA[var iceFormIdList=['j_idt7', 'j_idt12', 'pnlsFields:0:qstfrm', 'pnlsFields:1:qstfrm', 'pnlsFields:2:qstfrm', 'pnlsFields:3:qstfrm', 'pnlsFields:4:qstfrm', 'pnlsFields:5:qstfrm', 'pnlsFields:6:qstfrm', 'pnlsFields:7:qstfrm', 'pnlsFields:8:qstfrm', 'pnlsFields:9:qstfrm', 'v8lv3qo2-retrieve-update', 'v8lv3qo2-single-submit']; ice.fixViewStates(iceFormIdList,'2840535131029874048:6462768739125065871');]]></eval><extension aceCallbackParam="validationFailed">

</extension></changes></partial-response>

It is clearly missing the Ice.Scriptaculous.Autocompleter.Finder.find('j_idt12:sitCBAC').updateNOW script part which displays the select items.

Modified StackPane to reuse the child instances the entire JSF cycle instead of recreating them and then restoring their state. This was necessary since some components keep their state as instance fields without state saving them. Also the new approach improves performance by not re-creating instances and going through store/restore cycle multiple times during a JSF lifecycle.