Temperature correction using fridge temperature?

[Hugo-Pereira]

See graph above. When temperature of the fridge spikes (e.g. I open the door), the readings of SG also spikes. Temperature correction should be performed from the temperature of the beer, or Aux (iSpindel). But it seems like it is using the temperature of the fridge instead?

[vitotai]

Maybe your iSpindel was disturbed by door opening. Did you dry hop or do something to the fermenter?

Look the spike of fridge temperature around 18:00, the gravity didn't spike but dropped at that time.