DDPM 2.1 can't "Assign key" to mouse button

Hi,

I need to use "Assign key" to assign a couple of key press actions to a Dell mouse in the new DDPM 2.1. Once I select the action, the window that ask to select which key to assign pops up, but the input in the window doesn't work so I can't specify a key, therefore I can't use the "Assign key" action. Whatever key I press is not shown in the input box of the window.

By the way, look please at my 5-years-old request to add "Scroll to top" and "Scroll to bottom" actions. I need those action and, since they're not available, I resorted to using the "Assign key" action and specify CTRL+Home and CTRL+End but unfortunately now with the new version of DDPM the "Assign key" is also broken.

Thanks,

Stefano

PS: I have a translated version of DDPM and I don't know if in English the feature is actually called "Assign key" or has a similar name.