#14794 deprecated auto-creation of object arrays for ragged lists (hurray!!), which, perhaps not surprisingly is causing some test failures in astropy. We can address all those without problem (two out of three just need being more careful with the test), but I wasn't entirely sure whether a deprecation warning should be expected for the following:

import numpy as np
lofo = [1, [2, 3]]
a = np.array(lofo, dtype=object)
a == lofo
# /usr/bin/ipython3:1: DeprecationWarning: Creating an ndarray with automatic object dtype is deprecated, use dtype=object if you intended it, otherwise specify an exact dtype
# array([ True,  True])

In this case, arguably the intent is unambiguous: since one array is an object array, the list might as well be interpreted as an object array.

But it also seems fine to just be strict, so no problem if this is not fixed.