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.