I see some relevant test failures:

================================================= test session starts ==================================================
platform darwin -- Python 3.9.1, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
Downloading https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat
|==================================================================================| 1.3k/1.3k (100.00%)         0s

Running tests with astroquery version 0.4.2.dev6675_testrun.
Running tests in astroquery/ogle docs/ogle.

Date: 2021-04-19T18:06:58

Platform: macOS-10.13.6-x86_64-i386-64bit

Executable: /Users/bsipocz/.pyenv/versions/3.9.1/bin/python

Full Python Version: 
3.9.1 (default, Jan 11 2021, 15:50:22) 
[Clang 10.0.0 (clang-1000.11.45.5)]

encodings: sys: utf-8, locale: UTF-8, filesystem: utf-8
byteorder: little
float info: dig: 15, mant_dig: 15

Package versions: 
Numpy: 1.19.5
Matplotlib: 3.3.3
Astropy: 4.2
APLpy: not available
pyregion: not available
pyVO: 1.1
astropy-helpers: 4.0.1

Using Astropy options: remote_data: any.

rootdir: /private/var/folders/dc/hsm7tqpx2d57n7vb3k1l81xw0000gq/T/astroquery-test-r772eiee/lib/python3.9/site-packages, configfile: setup.cfg
plugins: arraydiff-0.3, doctestplus-0.8.0, remotedata-0.3.2, cov-2.11.1, hypothesis-6.3.1, filter-subpackage-0.1.1, openfiles-0.5.0, astropy-header-0.1.2
collected 7 items                                                                                                      

astroquery/ogle/tests/test_ogle.py ...                                                                           [ 42%]
astroquery/ogle/tests/test_ogle_remote.py .FF                                                                    [ 85%]
docs/ogle/ogle.rst s                                                                                             [100%]

======================================================= FAILURES =======================================================
____________________________________________________ test_ogle_list ____________________________________________________

    @pytest.mark.remote_data
    def test_ogle_list():
        co = SkyCoord(0, 3, unit=(u.degree, u.degree), frame='galactic')
        co_list = [co, co, co]
        response = Ogle.query_region(coord=co_list)
        assert len(response) == 3
>       assert response['RA/Lon'][0] == response['RA/Lon'][1] == response['RA/Lon'][2]

astroquery/ogle/tests/test_ogle_remote.py:22: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/Users/bsipocz/.pyenv/versions/3.9.1/lib/python3.9/site-packages/astropy/table/table.py:1640: in __getitem__
    return self.columns[item]
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <TableColumns names=('RA[hr]','Dec[deg]','A_I','E(V-I)','S_E(V-I)','R_JKVI','mu','S_mu','QF','alg','dist_NG')>
item = 'RA/Lon'

    def __getitem__(self, item):
        """Get items from a TableColumns object.
        ::
    
          tc = TableColumns(cols=[Column(name='a'), Column(name='b'), Column(name='c')])
          tc['a']  # Column('a')
          tc[1] # Column('b')
          tc['a', 'b'] # <TableColumns names=('a', 'b')>
          tc[1:3] # <TableColumns names=('b', 'c')>
        """
        if isinstance(item, str):
>           return OrderedDict.__getitem__(self, item)
E           KeyError: 'RA/Lon'

/Users/bsipocz/.pyenv/versions/3.9.1/lib/python3.9/site-packages/astropy/table/table.py:239: KeyError
________________________________________________ test_ogle_list_values _________________________________________________

    @pytest.mark.remote_data
    def test_ogle_list_values():
        co_list = [[0, 0, 0], [3, 3, 3]]
        response = Ogle.query_region(coord=co_list)
        assert len(response) == 3
>       assert response['RA/Lon'][0] == response['RA/Lon'][1] == response['RA/Lon'][2]

astroquery/ogle/tests/test_ogle_remote.py:30: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/Users/bsipocz/.pyenv/versions/3.9.1/lib/python3.9/site-packages/astropy/table/table.py:1640: in __getitem__
    return self.columns[item]
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <TableColumns names=('RA[hr]','Dec[deg]','A_I','E(V-I)','S_E(V-I)','R_JKVI','mu','S_mu','QF','alg','dist_NG')>
item = 'RA/Lon'

    def __getitem__(self, item):
        """Get items from a TableColumns object.
        ::
    
          tc = TableColumns(cols=[Column(name='a'), Column(name='b'), Column(name='c')])
          tc['a']  # Column('a')
          tc[1] # Column('b')
          tc['a', 'b'] # <TableColumns names=('a', 'b')>
          tc[1:3] # <TableColumns names=('b', 'c')>
        """
        if isinstance(item, str):
>           return OrderedDict.__getitem__(self, item)
E           KeyError: 'RA/Lon'

/Users/bsipocz/.pyenv/versions/3.9.1/lib/python3.9/site-packages/astropy/table/table.py:239: KeyError
=============================================== short test summary info ================================================
FAILED astroquery/ogle/tests/test_ogle_remote.py::test_ogle_list - KeyError: 'RA/Lon'
FAILED astroquery/ogle/tests/test_ogle_remote.py::test_ogle_list_values - KeyError: 'RA/Lon'

Also, please squash the commits to remove the irrelevant ones.

I can't seem to recreate this error on my end even after rebasing

Codecov Report

Merging #1987 (744d4a3) into main (f99e1ba) will increase coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1987      +/-   ##
==========================================
+ Coverage   62.84%   62.93%   +0.08%     
==========================================
  Files         130      131       +1     
  Lines       16841    16917      +76     
==========================================
+ Hits        10584    10646      +62     
- Misses       6257     6271      +14     

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CI failure is a red herring as none of the new tests should be picked up by CI.

Thank you @tinumide!