Something weird has happened since the last HA Core and better-thermostat-ui-card updates. First my water heater card now displays 'configuration error.' There seems to be some confusion with the better-thermostat core version and the ui-card version. When all of the better thermostat cards are deleted from HA the one that appears as better-thermostat-climate card, produces a yaml type: custom:better-thermostat-normal-climate-card. This works but is missing some of the features previously available in the ui-card version. When the ui-card version is added back into HACS, it does not appear as a different card.
My original card has - type: custom:better-thermostat-ui-card and this no longer seems to be available.
To make matters worse, my water heater definition randomly changes domains. Sometimes it's climate.water_heater but then water_heater.water_heater. The better thermostat card only accepts climate domain entities so that alternately I can display the water heater, then not.