Haven't found out yet. My server has massive queues and I didn't want to log out/back in to make the change. I'll find out tomorrow when I play again.
Printable View
TL;DR: check if the "Hold any Keystroke actions while Hotkey is Held" is set to ON on the mapped Key itself, not just on the group.
longer:
same problem here.
I mapped a second key to jump, with the same result, except that I have now still per client the space as a jump.
the second key does something (e.g. breaks follow) but char does not jump.
I checked the Hold any Keystroke actions while Hotkey is Held and it was set on the "Mapped Keys" but not on the key itself.
After I changed that on the key itself, it WORKED.
I'm having this issue too. No amount of changing it from (Default)On to On to Off and back and forth has fixed it.