The title for standard actions is not returned by vdc at all. It was empty.
I have seen vdc query to fail in demo wohnung:
[2019-09-17T12:34:32.968+02:00] 7013 ERROR vdcInfo Failed to read out device actions. propertyType:dynamicActionDescriptions e:DS485d/Socket Error [-1] response timeout ds485/dsbusinterface.cpp:186 dev:Steamer MSLQ(1c02864af86f5ba8c05059c5c9f2bdb200) meterMaintenance dev:Steamer MSLQ(1c02864af86f5ba8c05059c5c9f2bdb200) meterMaintenance device-info.cpp:758
The code partially recovers now.