Default environment behaviour

Recently I started to notice that all my Sentry issues display the first/last seen release information as n/a. I’m not sure what caused this change.

I noticed that I can reveal the information by changing the environment drop-down above from “Production” to “(Default Environment)”.

As far as I know, we are not using the environment feature. Nowhere do we specify the environment to Raven/Sentry.

I would like issues to use the “(Default Environment)” environment by default, so I can see the release information without manually toggling the drop-down every time. Is this possible?