Thermostats temperature graphs

Anyone has errors on the thermostats temperature graphs? For me after few days without restart HA graphs look like that:

I have that issue on HA 0.39.x and 0.40.x with Danfoss 014G0013 thermostats.

Got the same error

I reported that issue on github


I see the same with homematic thermostats and commented in the issue.

Same here with Ecobee. It appears to me like it’s drawing a line from the last recorded temp to that same temp at the time the restart happened.