Bug with Home Assistant Core 2022.2.0

the last version doesn’t seems to take into account the is_defined key into the value_template resulting in the following behavior:


The last valid value should be displayed instead of the last received json.

A bug has been open, in the meanwhile I would advise to don’t upgrade or if you already did it downgrade to 2021.12.10

Bug corrected in 2022.2.1