TYPO3 Core

Hi,

in the past it was possible to use displayCond in Flexform together with switchableControllerActions, but this seems to be broken in TYPO3 7.3

Example FlexForm XML:

<T3DataStructure>
    <meta>
        <langDisable>1</langDisable>
    </meta>
    <sheets>
        <sheet1>
            <ROOT>
                <TCEforms>
                    <sheetTitle>sheet 1</sheetTitle>
                </TCEforms>
                <type>array</type>
                <el>
                    <switchableControllerActions>
                        <TCEforms>
                            <label>select view</label>
                            <onChange>reload</onChange>
                            <config>
                                <type>select</type>
                                <items type="array">
                                    <numIndex index="0" type="array">
                                        <numIndex index="0">foo</numIndex>
                                        <numIndex index="1"></numIndex>
                                    </numIndex>
                                    <numIndex index="1" type="array">
                                        <numIndex index="0">bar</numIndex>
                                        <numIndex index="1">ControllerName->actionname;</numIndex>
                                    </numIndex>
                                </items>
                                <maxitems>1</maxitems>
                                <size>1</size>
                            </config>
                        </TCEforms>
                    </switchableControllerActions>
                </el>
            </ROOT>
        </sheet1>
        <sheet2>
            <ROOT>
                <TCEforms>
                    <sheetTitle>sheet 2</sheetTitle>
                    <displayCond><![CDATA[FIELD:sheet1.switchableControllerActions:=:ControllerName->actionname;]]></displayCond>
                </TCEforms>
                <type>array</type>
                <el>
                    <settings.foo>
                        <TCEforms>
                            <label>foo</label>
                            <config>
                                <type>input</type>
                            </config>
                        </TCEforms>
                    </settings.foo>
                </el>
            </ROOT>
        </sheet2>
    </sheets>
</T3DataStructure>

Sheet 2 should only be shown if Controllername->action; is set. But this seem not to work any more.
If I'm wrong, can you please tell me how to get this issue solved?

Alex