Usually, we clearly mark breaking changes in the release notes: Dgraph v20.11.1 - (Tenacious T’Challa - 1) release. I feel that we weren’t clear at all about this particular change in v20.11.1. (For example, see the release notes for v20.11.0 for BREAKING changes listed at the top)
I’m sure we brought in this change to fix a bug here. @pawan can chime in here.