Are session keys supposed to be case sensitive?

Latest RO, Delphi Tokyo.

If we do a Session[‘Something’] := 1; Session[‘something’] will not return a value (exception), but Session[‘Something’] will.

Is this a new behaviour? is it supposed to be case sensitive? I dont it was like these before.

Yes, I believe they always have been.

this behavior exists since 2012 year so it’s definitely isn’t new one