html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/4120#issuecomment-678072493,https://api.github.com/repos/pydata/xarray/issues/4120,678072493,MDEyOklzc3VlQ29tbWVudDY3ODA3MjQ5Mw==,6815844,2020-08-21T06:42:45Z,2020-08-21T06:42:45Z,MEMBER,"My last post was wrong.

I think this part overwrites the attrs,

https://github.com/pydata/xarray/blob/43a2a4bdf3a492d89aae9f2c5b0867932ff51cef/xarray/core/variable.py#L2028
https://github.com/pydata/xarray/blob/43a2a4bdf3a492d89aae9f2c5b0867932ff51cef/xarray/core/variable.py#L2073-L2076

The first line should be replaced by `variable = self.copy(deep=False)`
","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,630062936
https://github.com/pydata/xarray/issues/4120#issuecomment-677945186,https://api.github.com/repos/pydata/xarray/issues/4120,677945186,MDEyOklzc3VlQ29tbWVudDY3Nzk0NTE4Ng==,6815844,2020-08-20T22:51:21Z,2020-08-21T06:37:33Z,MEMBER,"~~These lines are suspicious. 
Maybe we should copy `attrs` here not geting its reference.~~

https://github.com/pydata/xarray/blob/43a2a4bdf3a492d89aae9f2c5b0867932ff51cef/xarray/core/rolling.py#L498

https://github.com/pydata/xarray/blob/43a2a4bdf3a492d89aae9f2c5b0867932ff51cef/xarray/core/rolling.py#L498","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,630062936