core: Device-specific hvac modes do not work anymore

Home Assistant release with the issue: 0.96.1

Last working Home Assistant release (if known): 0.95.4

Operating environment (Hass.io/Docker/Windows/etc.): Docker

Component/platform: Z-Wave / Climate (https://www.home-assistant.io/components/zwave/)

Description of problem: After upgrading to the new version all device specific hvac modes are not working anymore. I use Eurotronic Spirit Z devices, that have some special hvac modes. https://eurotronic.org/produkte/z-wave-heizkoerperthermostat/spirit-z-wave-plus/ These special modes (e.g. Heat Eco) do not work anymore. Neither can they be seen in lovelace ui:

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant):

No relevant entries

Traceback (if applicable):

2019-07-19 23:24:13 ERROR (MainThread) [homeassistant.components.websocket_api.http.connection.140051300553936] value is not allowed for dictionary value @ data['hvac_mode']
Traceback (most recent call last):
  File "/usr/src/app/homeassistant/components/websocket_api/commands.py", line 121, in handle_call_service
    connection.context(msg))
  File "/usr/src/app/homeassistant/core.py", line 1130, in async_call
    processed_data = handler.schema(service_data)
  File "/usr/local/lib/python3.7/site-packages/voluptuous/schema_builder.py", line 267, in __call__
    return self._compiled([], data)
  File "/usr/local/lib/python3.7/site-packages/voluptuous/schema_builder.py", line 589, in validate_dict
    return base_validate(path, iteritems(data), out)
  File "/usr/local/lib/python3.7/site-packages/voluptuous/schema_builder.py", line 427, in validate_mapping
    raise er.MultipleInvalid(errors)
voluptuous.error.MultipleInvalid: value is not allowed for dictionary value @ data['hvac_mode']

Additional information: