Inconsistent casualties in a pop-up

[tos1]

When retreated from a battle using Tab key, sometimes a pop-up window appear and shows casualties, but the values (of each side) are often different from ones displayed in the main window just after I closed the pop-up.

The problem is probably inherited from Brytenwalda or other upstream MODs. I thinks the pop-up is not necessary.

- How to reproduce it/when/why it happens:
Do battle with any troop, retreat from the battle using Tab key. Repeat the retreat till the pop-up appears. (It seems that pop-ups are more likely to appear if your unit is relatively weaker than your opponent.)

- Game version (and steam or downloaded):
AWoIaF v8.2, Warband v1.174 downloaded

In addition, the pet dog is counted as enemy in the pop-up above. It seems to be another bug.
Related topic:
A pet dog blocks to retreat from battle field