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
1631491844,I_kwDOAMm_X85hPpcE,7647,merge,117328108,open,0,,,8,2023-03-20T06:44:58Z,2023-04-28T14:27:02Z,,NONE,,,,"### What is your issue?

```python
da = xr.open_dataarray(r'D:\Projects\SARimage_mosaic\merge_data\vel_ll_41-140.grd')
db = xr.open_dataarray(r'D:\Projects\SARimage_mosaic\merge_data\vel_ll_143-141.grd')

dc = xr.merge([da, db], join=""outer"", compat='no_conflicts', combine_attrs='drop_conflicts')
dc.to_netcdf('a.grd')

ds = xr.open_dataarray('a.grd')

ds.plot()
plt.show()
```

![Figure_1](https://user-images.githubusercontent.com/117328108/226265899-2f513bbe-2d16-49fc-8c44-58e0b3462786.png)

Why are there gaps in the resulting images？
","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/7647/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,issue