@PYneer, thx for the reply & the post's URL!
Unfortunately,
1st) the post is six weeks old and somehow indicates that the problem should be fixed
2nd) If I'm correct, an overpayment would imply a positive amount greater than the absolute value of the negative amount, but it is not the case: +0.2063 vs. -0.7937
3rd) Negative values have appeared again in the last payments:
Last 100 payments:
Block Date Total Add Balance
37225 01.01. 0:52 12.68 +0.246 -0.754 PAID!
37065 31.12. 13:51 12.43 +0.1684 0.3167 PAID!
37047 31.12. 12:30 12.26 +0.1483 0.1483
37028 31.12. 11:31 12.11 +0.2929 -0.7071 PAID!
36879 31.12. 1:19 11.82 +0.2953 0.3676 PAID!
so...