AttributeError when combining lazy=False and order_by=Some.class_attribute

The attached test case results in:

AttributeError: 'InstrumentedAttribute' object has no attribute '_clone'

This happens as a result of combining {{{lazy=False}}} and {{{order_by=Address.email}}} on the defined relation.

The following work-arounds have been found, each one avoiding the problem: * {{{lazy != False}}} * {{{order_by == addresses_table.c.email}}} * {{{order_by == asc(Address.email)}}}

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