HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

We tested the chess timer.
Settings: 4+3+1.
I noticed the following: for example:
The timer shows 2:15, we enter a battle, everything is fine - the timer shows 3:15. We fought for 20 seconds. At the end of the battle, the results table shows a timer of 2:55.
We click OK and exit the battle - the timer resets to 2:15.

So, the remaining time in the battle is not added?
Thank you in advance for your answer.