I pressed 'A' to open my skills and then pressed '4' on the numpad to try to quick-set a skill. However, it seems like the left/right arrows switch the tab in the menu system? Because of how the numpad works, if I press '4', first the menu switches to the left tab, and then '4' is triggered, causing me to be in the quick-set mode for spells instead of skills. Similarly, if I am on the spells tab and press '6', it will bring me to the quick-set menu on skills. Turning numlock off simply gets me the left/right arrow functionality, not 4/6 functionality. Pressing the '4' NOT on the numpad works as intended.

I'm playing in ASCII mode on Windows.