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On other hand, consider the following example of multiline assignment:
$ rlwrap ./python -m dis
a = [
 x,
 y,
]
In 3.7:
 2 0 LOAD_NAME 0 (x)
 3 2 LOAD_NAME 1 (y)
 4 BUILD_LIST 2
 6 STORE_NAME 2 (a)
 8 LOAD_CONST 0 (None)
 10 RETURN_VALUE
In 3.8:
 2 0 LOAD_NAME 0 (x)
 3 2 LOAD_NAME 1 (y)
 1 4 BUILD_LIST 2
 6 STORE_NAME 2 (a)
 8 LOAD_CONST 0 (None)
 10 RETURN_VALUE
In 3.7 the line of the assignment "a = [" is not traced. In 3.8 it is traced.
These all are a consequences of the same change.