When querying documents from a collection, the field type reference does not return an instance of DocumentReference anymore. Therefore calling e.g. get() will result in an is not a function error. Example code can be found in the link below.
Thank you for reporting this issue. The stackblitz link was super helpful! At first glance, this definitely appears to be a regression in 8.1.0 (compared to 8.0.2). I'll do some investigation and reply back. Just a heads-up, since it's a long weekend in the US, I may not have a meaningful response until next week.
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Thank you for reporting this issue. The stackblitz link was super helpful! At first glance, this definitely appears to be a regression in 8.1.0 (compared to 8.0.2). I'll do some investigation and reply back. Just a heads-up, since it's a long weekend in the US, I may not have a meaningful response until next week.