[ToME 1.5.10] ESC button and Overwrite Character? window.

[BugReporter]

Short description.
By pressing ESC in Overwrite Character? window you confirm the action instead of cancelling it.
Actual result.
If you press ESC in Overwrite Character? window, you'll overwrite the existing character.
Expected result.
By pressing ESC in Overwrite Character? window you cancel the action and close the window.
Steps to reproduce.
1. Create a character Test.
2. Press ESC to open Game Menu and select Main Menu. Confirm.
3. Create a character named Test.
4. Select Paly! -> Overwrite Character? window appears.
5. Press ESC.
Game version.
1.5.10 for windows from ToME site.
Comment.
I think there was another window with the same issue, but I don't remember what it was. Was it the portal in the Tower in Last Hope?