It's one of those fun little quirks about Evony which we all come to love and cherish... and some even pay homage to.

Dismantling excess abatises is really very easy, so it's not a major issue. You may want to post this in the bug section. Perhaps the devs will get around to adjusting the numbers... some day. I imagine the bug won't go very high on their to-do lists but it may get adjusted some day.