[Bug] TimestampJson to date format add 2 hours to my timestamp

Hello everyone !

On my graph abscissa, I want to use a timestamp in my json.
So, I convert it to date format for my dashboard.
But, unfortunately, on my dashboard, I saw that the format conversion increased the time for 2 hours.

For example :
timeStampJson : 15h
Time on my dashboard graph : 17h

I already check my timezone and it’s correct …

Thank you for your help,