id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
807455876,MDExOlB1bGxSZXF1ZXN0NTcyNzAzNzUz,4899,Revert defaults of backends' open_datasets to prepare the switch to APIv2,226037,closed,0,,,0,2021-02-12T18:28:01Z,2021-02-17T18:12:34Z,2021-02-17T18:12:34Z,MEMBER,,0,pydata/xarray/pulls/4899,"
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- [x] Related to #4309
- [x] Passes `pre-commit run --all-files`

Internal fix. At the moment even when setting `XARRAY_BACKEND_API=v2` the defaults of `open_dataset` are defined by the v1 function. In APIv2 the defaults are defined by the backends (for example `pseudonetcdf_.py` sets `mask_and_scale=False`).

This PR fixes the backend defaults to be the same as in v1 in all cases.","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/4899/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull