Notify new user about the default option : User data directory automatically deleted

[ZacBouh]

There should be a clear warning / notification about the default option that removes user data when a running fiddle exits :

I spent 2h chasing where were my mistakes when following the documentation, and went through a lot of testing before finding out this option in the advanced settings. When following basics from the doc like "how to persist a session" a new user is confronted with unexplicable behavior (and frustration).

My opinion is that leads to a very bad user experience and I don't think that I have been the first person experiencing it.

I think it should be mentioned either at first launch, or with a notification / toast / pop up of any kind.

I would be ready to implement it.