Why are my device states displaying templated values?

I don’t know exactly when this started happening, but lately the state shown under the name of most of the items in my lovelace UI have started showing the raw template instead of the actual value. Like this:

I assume there’s something I did to mess this up. Any ideas? Happy to provide any relevant info that might help.

Can you share your config? Also share your lovelace file of you manage this separately

just to confirm, what version are you running?
i think you maybe running a dev version,

Great catch, thank you! I’d set up auto update for my hass docker container but had forgotten to pin to the stable release, so I was on 0.99 dev. Thanks for the help!