How did print(*a, a.pop(0)) change?

Question

This code:

a = [1, 2, 3]
print(*a, a.pop(0))

Python 3.8 prints 2 3 1 (does the pop before unpacking).
Python 3.9 prints 1 2 3 1 (does the pop after unpacking).

What caused the change? I didn't find it in the changelog.

Edit: Not just in function calls but also for example in a list display:

a = [1, 2, 3]
b = [*a, a.pop(0)]
print(b)

Prints [2, 3, 1] vs [1, 2, 3, 1]. And Expression lists says "The expressions are evaluated from left to right" (that's the link to Python 3.8 documentation), so I'd expect the unpacking expression to happen first.