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
1404926762,I_kwDOAMm_X85TvXsq,7154,nightly failure with h5netcdf indexing,2448579,closed,0,,,8,2022-10-11T16:32:33Z,2022-10-12T14:11:04Z,2022-10-12T14:11:04Z,MEMBER,,,,"### What happened?

From upstream-dev CI: [Workflow Run URL](https://github.com/pydata/xarray/actions/runs/3223203335)
<details><summary>Python 3.10 Test Summary</summary>

```
xarray/tests/test_backends.py::TestH5NetCDFData::test_orthogonal_indexing: AssertionError: Left and right Dataset objects are not identical

Differing coordinates:
L   numbers  (dim3) int64 0 1 2 0 0
R   numbers  (dim3) int64 ...
L * dim3     (dim3) <U1 'a' 'b' 'c' 'd' 'e'
R * dim3     (dim3) object 'a' 'b' 'c' 'd' 'e'
Differing data variables:
L   var3     (dim3, dim1) float64 -0.4059 1.247 -0.3095 ... 0.8073 -0.2758
    foo: variable
R   var3     (dim3, dim1) float64 ...
    foo: variable
L   var2     (dim1, dim2) float64 0.3307 -1.768 -1.454 ... -0.6426 2.697 0.4849
    foo: variable
R   var2     (dim1, dim2) float64 ...
    foo: variable
L   var1     (dim1, dim2) float64 -1.639 1.625 0.3936 ... -0.8715 0.2285 -0.0473
    foo: variable
R   var1     (dim1, dim2) float64 ...
    foo: variable
xarray/tests/test_backends.py::TestH5NetCDFData::test_vectorized_indexing: AttributeError: 'list' object has no attribute 'stop'
xarray/tests/test_backends.py::TestH5NetCDFData::test_isel_dataarray: AssertionError: Left and right Dataset objects are not identical


Differing data variables:
L   var2     (dim1, dim2) float64 0.6563 0.3721 1.274 ... 1.106 -0.2169 1.502
    foo: variable
R   var2     (dim1, dim2) float64 ...
    foo: variable
L   var1     (dim1, dim2) float64 0.2482 0.4837 2.044 ... -0.8528 -1.536 -0.3347
    foo: variable
R   var1     (dim1, dim2) float64 ...
    foo: variable
xarray/tests/test_backends.py::TestH5NetCDFData::test_array_type_after_indexing: AssertionError: Left and right Dataset objects are not identical

Differing coordinates:
L   numbers  (dim3) int64 0 1 2 0 0
R   numbers  (dim3) int64 ...
L * dim3     (dim3) <U1 'a' 'b' 'c' 'd' 'e'
R * dim3     (dim3) object 'a' 'b' 'c' 'd' 'e'
Differing data variables:
L   var3     (dim3, dim1) float64 -0.02351 -2.274 0.9986 ... -1.546 0.1454
    foo: variable
R   var3     (dim3, dim1) float64 ...
    foo: variable
L   var2     (dim1, dim2) float64 0.7681 1.803 1.406 ... 1.524 0.5592 -0.5456
    foo: variable
R   var2     (dim1, dim2) float64 ...
    foo: variable
L   var1     (dim1, dim2) float64 0.8966 -0.1489 0.3954 ... -0.689 -0.9191
    foo: variable
R   var1     (dim1, dim2) float64 ...
    foo: variable
xarray/tests/test_backends.py::TestH5NetCDFFileObject::test_orthogonal_indexing: AssertionError: Left and right Dataset objects are not identical

Differing coordinates:
L   numbers  (dim3) int64 0 1 2 0 0
R   numbers  (dim3) int64 ...
L * dim3     (dim3) <U1 'a' 'b' 'c' 'd' 'e'
R * dim3     (dim3) object 'a' 'b' 'c' 'd' 'e'
Differing data variables:
L   var3     (dim3, dim1) float64 -0.4183 -0.3932 -0.01572 ... 0.6842 -0.4205
    foo: variable
R   var3     (dim3, dim1) float64 ...
    foo: variable
L   var2     (dim1, dim2) float64 1.008 0.4886 -1.046 ... -1.152 -0.8104 1.077
    foo: variable
R   var2     (dim1, dim2) float64 ...
    foo: variable
L   var1     (dim1, dim2) float64 -1.11 -0.3574 -1.076 ... 0.7554 0.1688 0.5749
    foo: variable
R   var1     (dim1, dim2) float64 ...
    foo: variable
xarray/tests/test_backends.py::TestH5NetCDFFileObject::test_vectorized_indexing: AttributeError: 'list' object has no attribute 'stop'
xarray/tests/test_backends.py::TestH5NetCDFFileObject::test_isel_dataarray: AssertionError: Left and right Dataset objects are not identical


Differing data variables:
L   var2     (dim1, dim2) float64 0.2409 0.5855 1.56 ... 0.4115 -0.4185 0.6749
    foo: variable
R   var2     (dim1, dim2) float64 ...
    foo: variable
L   var1     (dim1, dim2) float64 -1.05 0.8272 -1.445 ... 0.3286 -0.05075 0.9352
    foo: variable
R   var1     (dim1, dim2) float64 ...
    foo: variable
xarray/tests/test_backends.py::TestH5NetCDFFileObject::test_array_type_after_indexing: AssertionError: Left and right Dataset objects are not identical

Differing coordinates:
L   numbers  (dim3) int64 0 1 2 0 0
R   numbers  (dim3) int64 ...
L * dim3     (dim3) <U1 'a' 'b' 'c' 'd' 'e'
R * dim3     (dim3) object 'a' 'b' 'c' 'd' 'e'
Differing data variables:
L   var3     (dim3, dim1) float64 -0.8477 0.8072 0.4219 ... 0.2703 0.5475 -1.696
    foo: variable
R   var3     (dim3, dim1) float64 ...
    foo: variable
L   var2     (dim1, dim2) float64 -0.9968 0.1141 0.7767 ... 0.09977 -0.7788
    foo: variable
R   var2     (dim1, dim2) float64 ...
    foo: variable
L   var1     (dim1, dim2) float64 2.949 -0.4085 0.7757 ... -0.2474 2.141 1.753
    foo: variable
R   var1     (dim1, dim2) float64 ...
    foo: variable
xarray/tests/test_formatting.py::test__mapping_repr_recursive: ValueError: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.
```

</details>

cc @benbovy @kmuehlbauer 

### Environment

<details>

INSTALLED VERSIONS
------------------
commit: 8eea8bb67bad0b5ac367c082125dd2b2519d4f52
python: 3.10.6 | packaged by conda-forge | (main, Aug 22 2022, 20:35:26) [GCC 10.4.0]
python-bits: 64
OS: Linux
OS-release: 5.15.0-1020-azure
machine: x86_64
processor: x86_64
byteorder: little
LC_ALL: None
LANG: C.UTF-8
LOCALE: ('en_US', 'UTF-8')
libhdf5: 1.12.2
libnetcdf: 4.8.1

xarray: 2022.9.1.dev12+g8eea8bb6
pandas: 1.6.0.dev0+297.g55dc32437e
numpy: 1.24.0.dev0+896.g5ecaf36cd
scipy: 1.10.0.dev0+2012.5be8bc4
netCDF4: 1.6.0
pydap: installed
h5netcdf: 1.1.0.dev5+g1168b4f
h5py: 3.7.0
Nio: None
zarr: 2.13.4.dev1
cftime: 1.6.2
nc_time_axis: 1.3.1.dev34+g0999938
PseudoNetCDF: 3.2.2
rasterio: 1.4dev
cfgrib: 0.9.10.2
iris: 3.3.1
bottleneck: 1.3.5
dask: 2022.9.2+17.g5ba240b9
distributed: 2022.9.2+19.g07e22593
matplotlib: 3.7.0.dev320+g834c89c512
cartopy: 0.21.0
seaborn: 0.12.0
numbagg: None
fsspec: 2022.8.2+14.g3969aaf
cupy: None
pint: 0.19.3.dev87+g052a920
sparse: None
flox: 0.5.11.dev3+g031979d
numpy_groupies: 0.9.19
setuptools: 65.4.1
pip: 22.2.2
conda: None
pytest: 7.1.3
IPython: None
sphinx: None

</details>
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