"Estimate Score" counts score incorrectly on final board showing scoring

[pdg137]

This game, for example, is properly scored:

But "Estimate Score" adds 4 points for White, reversing the outcome:

Clicking back just 1 step in the history fixes it:

I suspect this has something to do with how it's handling the dead stones at the end. Not sure if I'm even posting this in the correct repository. I think it's a new problem and the relevant code has not changed much recently.